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When do we have to use copy constructors?
...e copy constructor generated by the compiler does member-wise copying. Sometimes that is not sufficient. For example:
class Class {
public:
Class( const char* str );
~Class();
private:
char* stored;
};
Class::Class( const char* str )
{
stored = new char[srtlen( str ) + 1 ];
str...
Assign output of a program to a variable using a MS batch file
...or /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %datetime%
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How to install packages using pip according to the requirements.txt file from a local directory?
...nts file. This option can be
used multiple times.
Further information on some commonly used pip install options: (This is the help option on pip install command)
Also the above is the complete set of options. Please use pip install --help for complete list of opt...
How to write inline if statement for print?
I need to print some stuff only when a boolean variable is set to True . So, after looking at this , I tried with a simple example:
...
Error when changing to master branch: my local changes would be overwritten by checkout
... post) to be ready to say goodbye to any changes they made. I thought that time that changes done in one branch should stay on that branch until I checkout it again. Hint to newcomers who think that way too: use git stash :)
– Jacek Dziurdzikowski
Nov 22 '18 at...
How to resolve “Error: bad index – Fatal: index file corrupt” when using Git
After git init , I added and committed a few files, made some changes, added and committed. Set up the git daemon (running under Cygwin on WinXP) and cloned the repository once.
Now, I get this error with the cloned repository:
...
How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Non-alphanumeric list order from os.listdir()
...eeing soted output may depend on a lot of factors, such as OS, filesystem, time of creation of files, actions during the last defragmentation, ...
– Joachim Sauer
Jan 27 '11 at 7:34
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Adding a parameter to the URL with JavaScript
In a web application that makes use of AJAX calls, I need to submit a request but add a parameter to the end of the URL, for example:
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How can I create a two dimensional array in JavaScript?
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@haykam sorry to waste your time - I was being sarcastic :/
– BritishDeveloper
Jul 18 '19 at 22:39
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