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Why is it slower to iterate over a small string than a small list?
...ith timeit and noticed that doing a simple list comprehension over a small string took longer than doing the same operation on a list of small single character strings. Any explanation? It's almost 1.35 times as much time.
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How to make an OpenGL rendering context with transparent background?
...-------*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <GL/gl.h>
#include <GL/glx.h>
#include <GL/glxext.h>
#include <X11/Xatom.h>
#include <X11/extensions/Xrender.h>
#include <X11/Xutil.h>
#defin...
How can we match a^n b^n with Java regex?
...'s start with a simpler problem: we want to match a+ at the beginning of a string, but only if it's followed immediately by b+. We can use ^ to anchor our match, and since we only want to match the a+ without the b+, we can use lookahead assertion (?=…).
Here is our pattern with a simple test harn...
Clean code to printf size_t in C++ (or: Nearest equivalent of C99's %z in C++)
...l combine it with IOStreams to get type-safe behavior:
size_t foo = bar;
ostringstream os;
os << foo;
printf("%s", os.str().c_str());
It's not super-efficient, but your case above deals with file I/O, so that's your bottleneck, not this string formatting code.
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What does the 'b' character do in front of a string literal?
...xtra character. What would be a case in v3 where you would need to use a b string as opposed to just a regular string?
– Jesse Webb
Jun 7 '11 at 19:05
5
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Input from the keyboard in command line application
...out dropping down in to C:
My solution is as follows:
func input() -> String {
var keyboard = NSFileHandle.fileHandleWithStandardInput()
var inputData = keyboard.availableData
return NSString(data: inputData, encoding:NSUTF8StringEncoding)!
}
More recent versions of Xcode need an ...
How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
...an I specify that I want gdb to break at line x when char* x points to a string whose value equals "hello" ? If yes, how?
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Do the JSON keys have to be surrounded by quotes?
...
You are correct to use strings as the key. Here is an excerpt from RFC 4627 - The application/json Media Type for JavaScript Object Notation (JSON)
2.2. Objects
An object structure is represented as a pair of curly brackets
surrounding...
How to print (using cout) a number in binary form?
...
Thanks Jerry, I discovered to_string minutes later. FYI, casting doesn't work, the bitset variable is an object of some really arcane-looking bitset3ul (?!) class. Best to let the abstractions do the work!
– nirvanaswap
...
Error in strings.xml file in Android
I have declared a long string in string.xml of an application.
9 Answers
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