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What does $_ mean in PowerShell?
I've seen the following a lot in PowerShell, but what does it do exactly?
6 Answers
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Fix warning “Capturing [an object] strongly in this block is likely to lead to a retain cycle” in AR
... says that using keyword block and setting the variable to nil after using it inside the block should be ok, but it still shows the warning.
__block ASIHTTPRequest *request = [[ASIHTTPRequest alloc] initWithURL:...
[request setCompletionBlock:^{
NSDictionary *jsonDictionary = [[CJSONDeserializ...
How to check version of python modules?
I just installed the python modules: construct and statlib with setuptools like this:
25 Answers
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`if __name__ == '__main__'` equivalent in Ruby
...n't be surprised if there isn't really a good, clean way of doing this.
EDIT: Found it.
if __FILE__ == $0
foo()
bar()
end
But it's definitely not common.
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Multiple variables in a 'with' statement?
Is it possible to declare more than one variable using a with statement in Python?
6 Answers
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$_POST vs. $_SERVER['REQUEST_METHOD'] == 'POST'
...] contains the request method (surprise).
$_POST contains any post data.
It's possible for a POST request to contain no POST data.
I check the request method — I actually never thought about testing the $_POST array. I check the required post fields, though. So an empty post request would give ...
How to print a int64_t type in C
C99 standard has integer types with bytes size like int64_t. I am using the following code:
6 Answers
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Get Root Directory Path of a PHP project
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edited Jan 26 '19 at 21:20
Neuron
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How can I use “sizeof” in a preprocessor macro?
...; otherwise they will produce a compile-time error.
1. C11 way
Starting with C11 you can use static_assert (requires #include <assert.h>).
Usage:
static_assert(sizeof(someThing) == PAGE_SIZE, "Data structure doesn't match page size");
2. Custom macro
If you just want to get a compile-ti...
Extract traceback info from an exception object
Given an Exception object (of unknown origin) is there way to obtain its traceback? I have code like this:
5 Answers
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