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Convert char to int in C and C++
...0, '1' -> 1, etc, you can write
char a = '4';
int ia = a - '0';
/* check here if ia is bounded by 0 and 9 */
Explanation:
a - '0' is equivalent to ((int)a) - ((int)'0'), which means the ascii values of the characters are subtracted from each other. Since 0 comes directly before 1 in the ascii ...
Can I mix Swift with C++? Like the Objective-C .mm files
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Slipp D. Thompson
26.6k33 gold badges3939 silver badges3939 bronze badges
answered Jun 4 '14 at 16:35
Rob NapierRob Napier
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how perform grep operation on all files in a directory
Working with xenserver, and I want to perform a command on each file that is in a directory, grepping some stuff out of the output of the command and appending it in a file.
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Vim: Move window left/right?
... down/right.
You can also use the "windows command mode" with navigation keys to change a window's position:
Ctrl w + L - Move the current window to the "far right"
Ctrl w + H - Move the current window to the "far left"
Ctrl w + J - Move the current window to the "very bottom"
Ctrl w + K - Move ...
How do I pass values to the constructor on my wcf service?
I would like to pass values into the constructor on the class that implements my service.
8 Answers
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Reverting a single file to a previous version in git [duplicate]
...rent commits on a file.
Say I modified a file 5 times and I want to go back to change 2, after I already committed and pushed to a repository.
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Windows: How to specify multiline command on command prompt?
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After trying almost every key on my keyboard:
C:\Users\Tim>cd ^
Mehr? Desktop
C:\Users\Tim\Desktop>
So it seems to be the ^ key.
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im...
Continuously read from STDOUT of external process in Ruby
... begin
# Do stuff with the output here. Just printing to show it works
stdout.each { |line| print line }
rescue Errno::EIO
puts "Errno:EIO error, but this probably just means " +
"that the process has finished giving output"
end
end
rescue PTY::ChildExited
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“Inner exception” (with traceback) in Python?
My background is in C# and I've just recently started programming in Python. When an exception is thrown I typically want to wrap it in another exception that adds more information, while still showing the full stack trace. It's quite easy in C#, but how do I do it in Python?
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Difference between onStart() and onResume()
...s always called after onStart() . Why can't it be the onResume() is invoked after onRestart() and onCreate() methods just excluding onStart() ? What is its purpose?
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