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How can I return NULL from a generic method in C#?
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Two options:
Return default(T) which means you'll return null if T is a reference type (or a nullable value type), 0 for int, '\0' for char, etc. (Default values table (C# Reference))
Restrict T to be a reference type with the where T : class constraint and then return null as normal
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#ifdef in C#
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#if DEBUG
bool bypassCheck=TRUE_OR_FALSE;//i will decide depending on what i am debugging
#else
bool bypassCheck = false; //NEVER bypass it
#endif
Make sure you have the checkbox to define DEBUG checked in your build propert...
Subprocess changing directory
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To run your_command as a subprocess in a different directory, pass cwd parameter, as suggested in @wim's answer:
import subprocess
subprocess.check_call(['your_command', 'arg 1', 'arg 2'], cwd=working_dir)
A child process can't change its parent's working directo...
Iterate over each line in a string in PHP
...file or copy/paste the contents of the file into a textarea. I can easily differentiate between the two and put whichever one they entered into a string variable, but where do I go from there?
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AngularJS HTTP post to PHP and undefined
...$email = $request->email;
$pass = $request->password;
Alternately, if you are heavily relying on $_POST functionality, you can form a query string like email=someemail@email.com&password=somepassword and send that as data. Make sure that this query string is URL encoded. If manually buil...
Java array reflection: isArray vs. instanceof
Is there a preference or behavior difference between using:
8 Answers
8
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Updating packages in Emacs
I have the following setup for packages (not sure if there is a better recommended one):
4 Answers
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Using a custom typeface in Android
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Is there a way to do this from the
XML?
No, sorry. You can only specify the built-in typefaces through XML.
Is there a way to do it from code in
one place, to say that the whole
application and all the components
should use the custom typeface instead
of the default one?
Not tha...
Determining the last changelist synced to in Perforce
...:
p4 changes -m1 @clientname
they note a few gotchas:
This only works if you have not submitted anything from the workspace in question.
It is also possible that a client workspace is not synced to any specific changelist.
and there's an additional gotcha they don't mention:
If the highes...
Regular cast vs. static_cast vs. dynamic_cast [duplicate]
...and additions. static_cast performs no runtime checks. This should be used if you know that you refer to an object of a specific type, and thus a check would be unnecessary. Example:
void func(void *data) {
// Conversion from MyClass* -> void* is implicit
MyClass *c = static_cast<MyClass*...