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How do I put two increment statements in a C++ 'for' loop?
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I first thought you were incorrect, but I wrote some test code and you are correct - it does not behave like a comma operator. Will amend my answer!
– Paul Dixon
Aug 5 '09 at 10:27
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Run an untrusted C program in a sandbox in Linux that prevents it from opening files, forking, etc.?
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You can use Qemu to test assignments quickly. This procedure below takes less than 5 seconds on my 5 year old laptop.
Let's assume the student has to develop a program that takes unsigned ints, each on their own line, until a line with "-1" arr...
Find first element by predicate
...ns return a lazy stream). To convince you, you can simply do the following test:
List<Integer> list = Arrays.asList(1, 10, 3, 7, 5);
int a = list.stream()
.peek(num -> System.out.println("will filter " + num))
.filter(x -> x > 5)
.findFirst()
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Dashed line border around UIView
...resolution like suppose your normal image size is 120x120 and it's name is test.png then create another two image with name test@2x.png and test@3x.png with size of 240x240 and 360x360 which is used in all the apple device automatically with it's related name. (i.e. test.png is use in iPhone 4, test...
Seeding the random number generator in Javascript
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sfc32 (Simple Fast Counter)
sfc32 is part of the PractRand random number testing suite (which it passes of course). sfc32 has a 128-bit state and is very fast in JS.
function sfc32(a, b, c, d) {
return function() {
a >>>= 0; b >>>= 0; c >>>= 0; d >>>=...
How to override toString() properly in Java?
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If you're interested in Unit-Tests, then you can declare a public "ToStringTemplate", and then you can unit test your toString. Even if you don't unit-test it, I think its "cleaner" and uses String.format.
public class Kid {
public static final St...
Java: How to get input from System.console()
...mport java.io.IOException;
import java.io.InputStreamReader;
public class Test {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter String");
String s = br.readLin...
How to properly reuse connection to Mongodb across NodeJs application and modules
...useNewUrlParser: true }, function( err, client ) {
_db = client.db('test_db');
return callback( err );
} );
},
getDb: function() {
return _db;
}
};
To use it, you would do this in your app.js:
var mongoUtil = require( 'mongoUtil' );
mongoUtil.connectToServer( function...
Pass parameter to fabric task
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Fabric 2 task arguments documentation:
http://docs.pyinvoke.org/en/latest/concepts/invoking-tasks.html#task-command-line-arguments
Fabric 1.X uses the following syntax for passing arguments to tasks:
fab task:'hello world'
fab task:something='hello'
fab task:foo=99,bar=True
fab task:fo...
How to check if an object is a list or tuple (but not string)?
... were somehow time-critical, we might want to replace it with some sort of test to see if arg is a sequence. Rather than testing the type, we should probably test behaviors. If it has a .strip() method, it's a string, so don't consider it a sequence; otherwise, if it is indexable or iterable, it's...