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C++ Singleton design pattern
...ingleton: How should it be used
See this two article about initialization order and how to cope:
Static variables initialisation order
Finding C++ static initialization order problems
See this article describing lifetimes:
What is the lifetime of a static variable in a C++ function?
See this ...
In which scenario do I use a particular STL container?
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You now have unordered_map and unordered_set (and their multi variants) which are not in the flow chart but are good picks when you don't care about order but need to find elements by key. Their lookup is usually O(1) instead of O(log n).
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How to configure git bash command line completion?
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On Linux
on most distributions, git completion script is installed into /etc/bash_completion.d/ (or /usr/share/bash-completion/completions/git) when you install git, no need to go to github. You just need to use it - add this line to your .bashrc:
source /etc/bash_completion.d/git
# or
source /us...
How to set the environmental variable LD_LIBRARY_PATH in linux
...le under Ubuntu the right way to do this is to add a custom .conf file to /etc/ld.so.conf.d, for example
sudo gedit /etc/ld.so.conf.d/randomLibs.conf
inside the file you are supposed to write the complete path to the directory that contains all the libraries that you wish to add to the system, fo...
How do I concatenate two lists in Python?
...sts.
The upside to this approach is that you really don't need lists in order to perform it, anything that is iterable will do. As stated in the PEP:
This is also useful as a more readable way of summing iterables into a
list, such as my_list + list(my_tuple) + list(my_range) which is now
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AngularJS ng-click stopPropagation
...n('click', function(event){
event.stopPropagation();
// In order to work with stopPropagation and two data way binding
// if you don't use scope.$apply in my case the model is not updated in the view when I click on the element that has my directive
scope.$apply(funct...
Python how to write to a binary file?
...e to file
for byte in newFileBytes:
newFile.write(byte.to_bytes(1, byteorder='big'))
I.e., each single call to to_bytes in this case creates a string of length 1, with its characters arranged in big-endian order (which is trivial for length-1 strings), which represents the integer value byte. ...
How does the socket API accept() function work?
.... This was done to improve per-packet performance: computers were several orders of magnitude slower in those days.
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Import PEM into Java Key Store
...g to connect to an SSL server which requires me to authenticate myself. In order to use SSL over Apache MINA I need a suitable JKS file. However, I have only been given a .PEM file.
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How to keep indent for second line in ordered lists via CSS?
...ms, and need consistent vertical spacing, the solution is to add vertical border-spacing to the ol selector, e.g. border-spacing: 0 3px; Normal padding on the table-cell does not work because the number is always only one line.
– RemBem
Nov 12 '15 at 13:42
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