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Convert a String In C++ To Upper Case
...ing glibc's toupper in a loop.) There's a dynamic_cast of the locale that doesn't get hoisted out of the per-char loop. See my answer. On the plus side, this may be properly UTF-8 aware, but the slowdown doesn't come from handling UTF-8; it comes from using a dynamic_cast to re-check the locale e...
What do the crossed style properties in Google Chrome devtools mean?
...SS properties. At times, some of these properties are struck-through. What do these properties mean?
5 Answers
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scrollIntoView Scrolls just too far
...st the containing div's scroll offset like that:
el.scrollIntoView(true);
document.getElementById("containingDiv").scrollTop -= 10;
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How do I plot in real-time in a while loop using matplotlib?
...real time using OpenCV. However, the real-time plotting (using matplotlib) doesn't seem to be working.
12 Answers
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Is it good practice to NULL a pointer after deleting it?
...ndard C++, the NULL define from C is somewhat different) avoids crashes on double deletes.
Consider the following:
Foo* foo = 0; // Sets the pointer to 0 (C++ NULL)
delete foo; // Won't do anything
Whereas:
Foo* foo = new Foo();
delete foo; // Deletes the object
delete foo; // Undefined behavio...
How do I disable the 'Debug / Close Application' dialog on Windows Vista?
When an application crashes on Windows and a debugger such as Visual Studio is installed the following modal dialog appears:
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How do I delete an exported environment variable?
...This should work per terminal instance. Generally, each time a terminal window is opened, it will load up variables from various places such as ~/.bashrc, ~/.profile, etc. Any variables you set in one terminal instance will not carry over to another. If you have a variable which seems to be set auto...
Copy the entire contents of a directory in C#
...lace could cause unwanted consequences. Just a warning to people that like doing copy and paste over the net. The code posted by @jaysponsored is safer because it doesn't use string.Replace but I'm sure it also has its corner cases.
– Alex
Dec 3 '11 at 18:58
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How does free know how much to free?
...ing, you can pass any kind of pointer you like as an argument to free, how does it know the size of the allocated memory to free? Whenever I pass a pointer to some function, I have to also pass the size (ie an array of 10 elements needs to receive 10 as a parameter to know the size of the array), bu...
Elegant way to check for missing packages and install them?
...ith coauthors these days. Many of them are novice/intermediate R users and don't realize that they have to install packages they don't already have.
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