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Programmatically find the number of cores on a machine
Is there a way to determine how many cores a machine has from C/C++ in a platform-independent way? If no such thing exists, what about determining it per-platform (Windows/*nix/Mac)?
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Eclipse, regular expression search and replace
...le to use the matched search string as part of the replace string when performing a regular expression search and replace?
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What does [STAThread] do?
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The STAThreadAttribute is essentially a requirement for the Windows message pump to communicate with COM components. Although core Windows Forms does not use COM, many components of the OS such as system dialogs do use this technology.
MSDN explains the reason in slightly more...
git add, commit and push commands in one?
...lows you to pass it an argument. I have added the following to my .bashrc (or .bash_profile if Mac):
function lazygit() {
git add .
git commit -a -m "$1"
git push
}
This allows you to provide a commit message, such as
lazygit "My commit msg"
You could of course beef this up even m...
How to check if a specific key is present in a hash or not?
I want to check whether the "user" key is present or not in the session hash. How can I do this?
7 Answers
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Is a URL allowed to contain a space?
Is a URI (specifically an HTTP URL) allowed to contain one or more space characters? If a URL must be encoded, is + just a commonly followed convention, or a legitimate alternative?
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How to tell when UITableView has completed ReloadData?
I am trying to scroll to the bottom of a UITableView after it is done performing [self.tableView reloadData]
19 Answers
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Programmatically generate video or animated GIF in Python?
... I want to create a video from. Ideally I could specify a frame duration for each frame but a fixed frame rate would be fine too. I'm doing this in wxPython, so I can render to a wxDC or I can save the images to files, like PNG. Is there a Python library that will allow me to create either a vide...
Checking for the correct number of arguments
How do i check for the correct number of arguments (one argument). If somebody tries to invoke the script without passing in the correct number of arguments, and checking to make sure the command line argument actually exists and is a directory.
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Add number of days to a date
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strtotime
expects to be given a string containing a US English date format and will try to parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 UTC), relative to the timestamp given in now, or the current time if now is not supplied.
while date
Re...