EncodeFlags
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An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|I suspect it happened the other way around. The database was already screwed -- storing a character flag (yuck) -- but the dev is smart enough to use an enum in the code instead. However, I (not being an average bear) would add a DescriptionAttribute to each member of the enum:
[Flags]
public enum EventType
{
[Description("")]
None = 0,
[Description("P")]
PreAlarm = 1,
[Description("A")]
Alarm = 2,
[Description("M")]
Malfunction = 4
}Then, to get the textual representation of the state, you get the Description from the enum -- and members can be added and removed to/from the enum without having to update the code. To take it a step further, I store the enum members and their textual representations in a Dictionary for easy look-up.
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I suspect it happened the other way around. The database was already screwed -- storing a character flag (yuck) -- but the dev is smart enough to use an enum in the code instead. However, I (not being an average bear) would add a DescriptionAttribute to each member of the enum:
[Flags]
public enum EventType
{
[Description("")]
None = 0,
[Description("P")]
PreAlarm = 1,
[Description("A")]
Alarm = 2,
[Description("M")]
Malfunction = 4
}Then, to get the textual representation of the state, you get the Description from the enum -- and members can be added and removed to/from the enum without having to update the code. To take it a step further, I store the enum members and their textual representations in a Dictionary for easy look-up.
Surely it would be simpler to cheat? :)
public enum EventType : ushort
{
None = 0,
PreAlarm = 'P',
Alarm = 'A',
Malfunction = 'M',
}var foo = (EventType)'P'; // foo == PreAlarm
char bar = (char)foo; // bar == 'P'
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
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Surely it would be simpler to cheat? :)
public enum EventType : ushort
{
None = 0,
PreAlarm = 'P',
Alarm = 'A',
Malfunction = 'M',
}var foo = (EventType)'P'; // foo == PreAlarm
char bar = (char)foo; // bar == 'P'
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
Yes. Many years ago, in C, I used a
shortto hold two characters for some text file parsing I needed to do. -
An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|Bernhard Hiller wrote:
store that value in a database eventually.
Did I miss important new trend in databases? When did they stopped supporting integers?
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Bernhard Hiller wrote:
store that value in a database eventually.
Did I miss important new trend in databases? When did they stopped supporting integers?
-
I suspect it happened the other way around. The database was already screwed -- storing a character flag (yuck) -- but the dev is smart enough to use an enum in the code instead. However, I (not being an average bear) would add a DescriptionAttribute to each member of the enum:
[Flags]
public enum EventType
{
[Description("")]
None = 0,
[Description("P")]
PreAlarm = 1,
[Description("A")]
Alarm = 2,
[Description("M")]
Malfunction = 4
}Then, to get the textual representation of the state, you get the Description from the enum -- and members can be added and removed to/from the enum without having to update the code. To take it a step further, I store the enum members and their textual representations in a Dictionary for easy look-up.
PIEBALDconsult wrote:
Then, to get the textual representation of the state
It's a flagged enum, so how would he represent the state
Alarm | Malfunction?To alcohol! The cause of, and solution to, all of life's problems - Homer Simpson ---- Our heads are round so our thoughts can change direction - Francis Picabia
-
An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|Bernhard Hiller wrote:
with some 25+ years of experience in software engineering
var experience = EventType.None | EventType.Alarm | EventType.Malfunction;;) MarcLatest Article - Create a Dockerized Python Fiddle Web App Learning to code with python is like learning to swim with those little arm floaties. It gives you undeserved confidence and will eventually drown you. - DangerBunny Artificial intelligence is the only remedy for natural stupidity. - CDP1802
-
An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|It makes no sense: 1 - There are combinations not covered by the encoder. ie
Alarm | Malfunction2 - It only makes sense to encode it if whatever is using does not support integers (or maybe it's meant to have a meaningful representation on a digital display, still what if it's alarming and malfunctioning). 3 - Should have used enum's HasFlag method. Now, an expert in C# and 25+ years in programming could only do this if he's hung over, lazy, dumb or having an idea so bright nobody can understand.To alcohol! The cause of, and solution to, all of life's problems - Homer Simpson ---- Our heads are round so our thoughts can change direction - Francis Picabia
-
An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|Bernhard Hiller wrote:
So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually.I learned decades ago that its a fool errand to insult the previous developer(s), especially if one was not there participating in the decision making process. There are a multitude of factors and/or external forces that impact decisions like this and arrogantly criticizing these choices accomplishes little.
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Looking at "QA" they also seem to have dropped support for dates.
It's worse than that: based on QA, they've also dropped support for parameterized queries! :rolleyes:
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
-
It makes no sense: 1 - There are combinations not covered by the encoder. ie
Alarm | Malfunction2 - It only makes sense to encode it if whatever is using does not support integers (or maybe it's meant to have a meaningful representation on a digital display, still what if it's alarming and malfunctioning). 3 - Should have used enum's HasFlag method. Now, an expert in C# and 25+ years in programming could only do this if he's hung over, lazy, dumb or having an idea so bright nobody can understand.To alcohol! The cause of, and solution to, all of life's problems - Homer Simpson ---- Our heads are round so our thoughts can change direction - Francis Picabia
First, assume a legacy database schema...
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Bernhard Hiller wrote:
So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually.I learned decades ago that its a fool errand to insult the previous developer(s), especially if one was not there participating in the decision making process. There are a multitude of factors and/or external forces that impact decisions like this and arrogantly criticizing these choices accomplishes little.
Hear hear!
-
Bernhard Hiller wrote:
So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually.I learned decades ago that its a fool errand to insult the previous developer(s), especially if one was not there participating in the decision making process. There are a multitude of factors and/or external forces that impact decisions like this and arrogantly criticizing these choices accomplishes little.
Especially knowing that I am also a previous developer to someone else. :rolleyes:
Wrong is evil and must be defeated. - Jeff Ello
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PIEBALDconsult wrote:
Then, to get the textual representation of the state
It's a flagged enum, so how would he represent the state
Alarm | Malfunction?To alcohol! The cause of, and solution to, all of life's problems - Homer Simpson ---- Our heads are round so our thoughts can change direction - Francis Picabia
Well spotted.
"If you don't fail at least 90 percent of the time, you're not aiming high enough." Alan Kay.
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Bernhard Hiller wrote:
So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually.I learned decades ago that its a fool errand to insult the previous developer(s), especially if one was not there participating in the decision making process. There are a multitude of factors and/or external forces that impact decisions like this and arrogantly criticizing these choices accomplishes little.
thund3rstruck wrote:
I learned decades ago that its a fool errand to insult the previous developer(s), especially if one was not there participating in the decision making process. There are a multitude of factors and/or external forces that impact decisions like this and arrogantly criticizing these choices accomplishes little.
I agree with you. I know the guy who wrote that code, and the circumstances: it's fresh code written this week. Some time ago, I discussed with him his obsession of encoding everything in magical ints or one-letter-strings, sometimes also providing "endode"/"decode" functions for converting between the magical ints and the one-letter-strings and the other way round...
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It's worse than that: based on QA, they've also dropped support for parameterized queries! :rolleyes:
"These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer
It is even worst than that, based on the QA they have also dropped support for brains
M.D.V. ;) If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about? Help me to understand what I'm saying, and I'll explain it better to you Rating helpful answers is nice, but saying thanks can be even nicer.
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Bernhard Hiller wrote:
with some 25+ years of experience in software engineering
var experience = EventType.None | EventType.Alarm | EventType.Malfunction;;) MarcLatest Article - Create a Dockerized Python Fiddle Web App Learning to code with python is like learning to swim with those little arm floaties. It gives you undeserved confidence and will eventually drown you. - DangerBunny Artificial intelligence is the only remedy for natural stupidity. - CDP1802
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He has a bug in in code by not returning a useful defalut value. And its also missing in the enum. If he is an expert in Solitaire I may know him? :~
Press F1 for help or google it. Greetings from Germany
KarstenK wrote:
useful defalut
What's that?
#SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
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It makes no sense: 1 - There are combinations not covered by the encoder. ie
Alarm | Malfunction2 - It only makes sense to encode it if whatever is using does not support integers (or maybe it's meant to have a meaningful representation on a digital display, still what if it's alarming and malfunctioning). 3 - Should have used enum's HasFlag method. Now, an expert in C# and 25+ years in programming could only do this if he's hung over, lazy, dumb or having an idea so bright nobody can understand.To alcohol! The cause of, and solution to, all of life's problems - Homer Simpson ---- Our heads are round so our thoughts can change direction - Francis Picabia
Fabio Franco wrote:
could only do this if he's
pissed-off at legacy crap.
#SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
-
An expert of programming and C# with some 25+ years of experience in software engineering wrote a really useful function:
private string EncodeFlags(EventType _eventType)
{
if (_eventType == EventType.Alarm)
{
return "A";
}
if (_eventType == EventType.PreAlarm)
{
return "P";
}
if (_eventType == EventType.Malfunction)
{
return "M";
}
return "";
}Already this function alone is some kind of WTF. But let's look at the definition of the input parameter which he translates:
[Flags]
public enum EventType
{
None = 0,
PreAlarm = 1,
Alarm = 2,
Malfunction = 4
}So he translates an
enumwith aFlagsattribute to astring, ignoring the fact that they are flags, in order to store that value in a database eventually. :~ X|Bernhard Hiller wrote:
ignoring the fact that they are flags
It could have been changed to [Flags] after-the-fact and this code was just not updated.
#SupportHeForShe Government can give you nothing but what it takes from somebody else. A government big enough to give you everything you want is big enough to take everything you've got, including your freedom.-Ezra Taft Benson You must accept 1 of 2 basic premises: Either we are alone in the universe or we are not alone. Either way, the implications are staggering!-Wernher von Braun
