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When should I use mmap for file access?
... environments provide at least two ways of accessing files. There's the standard system calls open() , read() , write() , and friends, but there's also the option of using mmap() to map the file into virtual memory.
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Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
...("lite" meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program flow, variables, and recursion.
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iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
...ing to be entering data in a modal form so they are trying to be "helpful" and keep the keyboard visible where ordinarily various transitions within the modal view can cause the keyboard to show/hide repeatedly.
edit: here is the response of an Apple engineer on the developer forums:
Was your v...
Longest line in a file
... the longest line in a file. Ideally, it would be a simple bash shell command instead of a script.
14 Answers
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Copy files without overwrite
I just can't seem to find a way on the command line to say "copy all the files from directory A to directory B, but if the file already exists in directory B, don't overwrite it, no matter which file is newer, and don't prompt me."
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Return positions of a regex match() in Javascript?
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if (match) {
console.log("match found at " + match.index);
}
And for multiple matches:
var re = /bar/g,
str = "foobarfoobar";
while ((match = re.exec(str)) != null) {
console.log("match found at " + match.index);
}
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Why is 'false' used after this simple addEventListener function?
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@BikashChandraMondal check out the answer below.
– libra
Nov 20 '14 at 3:21
34
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What does “Git push non-fast-forward updates were rejected” mean?
I'm using Git to manage my two computers and my development. I'm trying to commit changes to GitHub and I'm getting the error.
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How to generate random number with the specific length in python
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To get a random 3-digit number:
from random import randint
randint(100, 999) # randint is inclusive at both ends
(assuming you really meant three digits, rather than "up to three digits".)
To use an arbitrary number of digits:
fr...
Remove trailing zeros
....ToString("G29")
This should work for all input.
Update Check out the Standard Numeric Formats I've had to explicitly set the precision specifier to 29 as the docs clearly state:
However, if the number is a Decimal and the precision specifier is omitted, fixed-point notation is always used an...