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What is “thread local storage” in Python, and why do I need it?
...arate function calls.) And even then, only the variables themselves (the names that refer to objects) are local to the function; objects themselves are always global, and anything can refer to them.
The Thread object for a particular thread is not a special object in this regard. If you store the Th...
Default value of function parameter
...{
Add(4);
}
The compilation of test.cpp will not see the default parameter declaration, and will fail with an error.
For this reason, the default parameter definition is usually specified in the function declaration:
lib.h
int Add(int a, int b = 3);
...
Understanding dispatch_async
...
I"m doing exactly what you suggest but somehow, the uiTableViewCell doesn'tupdate right away when I call [self.tableView reloadData] in the Run UI Updates. It takes about 4 or 5 seconds. It's been driving me crazy for several days now.
– GrandS...
How do I get a TextBox to only accept numeric input in WPF?
...e.Handled = !IsTextAllowed(e.Text);
I use a simple regex in IsTextAllowed method to see if I should allow what they've typed. In my case I only want to allow numbers, dots and dashes.
private static readonly Regex _regex = new Regex("[^0-9.-]+"); //regex that matches disallowed text
private static...
When should I use a composite index?
For example, I have a homes table:
9 Answers
9
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How do I install a custom font on an HTML site
...
Yes, you can use the CSS feature named @font-face.
It has only been officially approved in CSS3, but been proposed and implemented in CSS2 and has been supported in IE for quite a long time.
You declare it in the CSS like this:
@font-face { font-family: Del...
git switch branch without discarding local changes
...mitted to master, to be on develop.
If you don't have a develop yet, the method is trivial:
$ git checkout -b develop
This creates a new develop branch starting from wherever you are
now. Now you can commit and the new stuff is all on develop.
You do have a develop. See if Git will let you sw...
Best way to implement keyboard shortcuts in a Windows Forms application?
I'm looking for a best way to implement common Windows keyboard shortcuts (for example Ctrl + F , Ctrl + N ) in my Windows Forms application in C#.
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Are “while(true)” loops so bad? [closed]
...get a formal degree. I was quite surprised to learn that, on my last assignment, I lost points for using a loop like the one below.
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What does middleware and app.use actually mean in Expressjs?
Almost every Express app I see has an app.use statement for middleware but I haven't found a clear, concise explanation of what middleware actually is and what the app.use statement is doing. Even the express docs themselves are a bit vague on this. Can you explain these concepts for me please?
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