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What does “dereferencing” a pointer mean?
...on't necessarily default to 0, nor bools to false, pointers are not always set to NULL. All these are set to 0/false/NULL when they're static variables or (C++ only) direct or indirect member variables of static objects or their bases, or undergo zero initialisation (e.g. new T(); and new T(x, y, z)...
How to split a string in shell and get the last field
Suppose I have the string 1:2:3:4:5 and I want to get its last field ( 5 in this case). How do I do that using Bash? I tried cut , but I don't know how to specify the last field with -f .
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Convert string in base64 to image and save on filesystem in Python
I have a string in base64 format, which represents PNG image. Is there a way to save this image to the filesystem, as a PNG file?
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Best way to format integer as string with leading zeros? [duplicate]
I need to add leading zeros to integer to make a string with defined quantity of digits ($cnt).
What the best way to translate this simple function from PHP to Python:
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Catching error codes in a shell pipe
...al to extend to a 4-part or N-part pipeline.
Simple experimentation with 'set -e' didn't help.
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How do you pass a function as a parameter in C?
...ant to create a function that performs a function passed by parameter on a set of data. How do you pass a function as a parameter in C?
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Is it possible to declare two variables of different types in a for loop?
...i < N; ++i, f += 1.5) {
// ...
}
The above will give you:
int i set to 1
double f set to 1.0
std::string s set to "ab"
Make sure to #include <tuple> for this kind of declaration.
You can specify the exact types inside the tuple by typing them all out as I have with the std::strin...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...association. If you want to get standard-conforming behavior, you need to set -fp-model precise with ICC. clang and gcc default to strict conformance w.r.t. reassociation.
– Stephen Canon
Mar 27 '14 at 18:19
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Effects of the extern keyword on C functions
In C, I did not notice any effect of the extern keyword used before function declaration.
At first, I thought that when defining extern int f(); in a single file forces you to implement it outside of the file's scope. However I found out that both:
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PyLint, PyChecker or PyFlakes? [closed]
...us review but here is what I can say :
I tried the tools with the default settings (it's important because you can pretty much choose your check rules) on the following script :
#!/usr/local/bin/python
# by Daniel Rosengren modified by e-satis
import sys, time
stdout = sys.stdout
BAILOUT = 16
MA...