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How to concatenate twice with the C preprocessor and expand a macro as in “arg ## _ ## MACRO”?
...ssing token (see below), is
replaced by the corresponding argument after all macros contained therein have been
expanded. Before being substituted, each argument’s preprocessing tokens are
completely macro replaced as if they formed the rest of the preprocessing file; no other
preprocessin...
What are Flask Blueprints, exactly?
...he string mold in Blueprint("mold", __name__)
– Codevalley
Aug 7 '17 at 6:48
8
...
Zero-pad digits in string
...
First of all, your description is misleading. Double is a floating point data type. You presumably want to pad your digits with leading zeros in a string. The following code does that:
$s = sprintf('%02d', $digit);
For more informa...
How do I pass parameters into a PHP script through a webpage?
I am calling a PHP script whenever a webpage loads. However, there is a parameter that the PHP script needs to run (which I normally pass through the command line when I am testing the script).
...
Does Swift support reflection?
...s to me it's just a hack to enable debugging in Xcode. Protocol Mirror actually quotes the word IDE several times.
– Sulthan
Jun 6 '14 at 7:50
7
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What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
... = "function-name";
appeared, where function-name is the name of the lexically-enclosing function. This name is the unadorned name of the function.
Note that it is not a macro and it has no special meaning during preprocessing.
__func__ was added to C++ in C++11, where it is specified as containi...
What are the special dollar sign shell variables?
... $3, ... are the positional parameters.
"$@" is an array-like construct of all positional parameters, {$1, $2, $3 ...}.
"$*" is the IFS expansion of all positional parameters, $1 $2 $3 ....
$# is the number of positional parameters.
$- current options set for the shell.
$$ pid of the current shell (...
Add data annotations to a class generated by entity framework
...
The generated class ItemRequest will always be a partial class. This allows you to write a second partial class which is marked with the necessary data annotations. In your case the partial class ItemRequest would look like this:
using System.ComponentModel;
using System.ComponentModel.DataAn...
Preserving signatures of decorated functions
... decorator that does something very generic. For example, it might convert all arguments to a specific type, perform logging, implement memoization, etc.
...
“Too many values to unpack” Exception
...nATupleWithThreeValues()
print a
print b
raises
Traceback (most recent call last):
File "c.py", line 3, in ?
a,b = returnATupleWithThreeValues()
ValueError: too many values to unpack
Now, the reason why this happens in your case, I don't know, but maybe this answer will point you in the r...