The Daily WTF: Curious Perversions in Information Technology

2010-09-12 Reply Admin

Can someone explain to me why for enums (not limited to booleans here) some programmers like putting a "default" or "unknown" value which is, by all accounts, a pseudo-null as it designed to not be a valid option and usually never fully implemented.

Perhaps the guy is just coming from a C background, where enums are basically integers, and hence non nullable.

Jaime · 2010-09-13 Reply Admin

methinks:
Brian White:
Larry:
TRWTF is "Integers" that don't encompass the entire range of values.

TRWTF is "Integers" period. Screw integers.

So I suppose you are one of those people who invite absolute disaster into their projects by using some float type to represent e.g. money values or the like? ;oP

I just went through a project where the contractors used double for local variables to hold currency values. We noticed when we received a report stating that an account balance was off by $7.105427357601E-15.

2010-09-13 Reply Admin

Tanuki:
A lot of talk about booleans. Can I do -this- in C#?
int b_acc += (int) b;
In where b is a bool.

lol @ the WTF there (allocating an int then incrementing it assigning an initial value;

Assuming that you did allocated b_acc and set it correctly elsewhere, I imagine something like the following would get the job done!

b_acc += (b ? 1 : 0);

This will convert the bool into an int in a clear and concise way. It would eve work under C++.

CAPTHA - veniam --- can I get that on a sandwich

2010-09-14 Reply Admin

Yeah, made a mistake right there.

It just came to my mind that once I had a situation in Java, in where there was a set of boolean values and I needed to count the number of trues. Of course, in Java its a grave offence even to think of cast a boolean into anything, so I did that with ternary the conditional too.

"What's the point?" You say. I just wanted to know if its possible in C# to use booleans in integer exressions.

2010-09-20 Reply Admin

Since it's an extension method, no need to menmtion the type in the method name...

public static string ToStr(this bool b){return b.ToString();}

2010-09-23 Reply Admin

Pedantic much?

2010-10-04 Reply Admin

frits:
C# fun facts: Boolean keywords are all lowercase. ToString() and TrueString/FalseString are capitalized. Parse() expects capitalization.
This method will not return "true" or "false" as is.

MSDN clearly states Parse() is case insensitive. RTFM, noob.

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