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How to measure time in milliseconds using ANSI C?
Using only ANSI C, is there any way to measure time with milliseconds precision or more? I was browsing time.h but I only found second precision functions.
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Will console.log reduce JavaScript execution performance?
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when the browser console is closed, calling console.log is about 10 000 times slower than calling an empty function,
and when the console is open, calling it is as much as 100 000 times slower.
Not that you'll notice the performance lag if you have a reasonable number of console.… calls firin...
Simpler way to create dictionary of separate variables?
... @keflavich I liked this approach very much and have used it from time to time now. However I cant get it to work inside functions. I guess there are "better" ways to do it, but none are as nice'n'simple as nbubis puts it. Have you been able to use it in functions keflavich? This is where I...
How to find all duplicate from a List? [duplicate]
...oList().ForEach(key => Console.WriteLine(string.Format("{0} appears {1} times", key, wordCount[key])));
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Lambda expression to convert array/List of String to array/List of Integers
...und another one line solution, but it's still pretty slow (takes about 100 times longer than a for cycle - tested on an array of 6000 0's)
String[] stringArray = ...
int[] out= Arrays.asList(stringArray).stream().map(Integer::parseInt).mapToInt(i->i).toArray();
What this does:
Arrays.asList(...
Does a foreign key automatically create an index?
... will create something akin to an index in the child table. I have a hard time believing this to be true, but can't find much out there related specifically to this.
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What's the difference between using “let” and “var”?
...n each one to see
funcs[j]();
}
My value: 3 was output to console each time funcs[j](); was invoked since anonymous functions were bound to the same variable.
People had to create immediately invoked functions to capture correct value from the loops but that was also hairy.
Hoisting
While var...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
...ter (@headius on Twitter) that this is the correct explanation. He's a big-time JRuby dev, so I'd consider his word pretty authoritative.
– Hank Gay
Apr 20 '11 at 0:52
18
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const char* concatenation
...two);
The C++ way:
std::string buf(one);
buf.append(two);
The compile-time way:
#define one "hello "
#define two "world"
#define concat(first, second) first second
const char* buf = concat(one, two);
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What is the difference between LR, SLR, and LALR parsers?
...curs: the semantic action for G is called, the stack is popped n (from Rn) times, the pair (S,G) is pushed onto the stack, the new state S' is set to GOTO(G), and the cycle repeats with the same token T. If the parser is an SLR parser, there is at most one reduction rule for the state and so the red...