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Determining 32 vs 64 bit in C++
...if _WIN32 || _WIN64 … #elif __GNUC__ … #else # error "Missing feature-test macro for 32/64-bit on this compiler."?
– Davislor
Nov 29 '15 at 20:24
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How can I get selector from jQuery object
...T THING</strong> ever</p>
<button id="myButton">Button test</button>
</div>
<ul>
<li>Item one
<ul>
<li id="sub2" >Sub one</li>
<li id="sub2" class="subitem otherclass">Sub two</li>
</ul>
</li&g...
Maven: Command to update repository after adding dependency to POM
...ork.
You can use mvn compile to download compile time dependencies or mvn test for compile time and test dependencies but I prefer something that always works.
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improve this answer
...
Is there a range class in C++11 for use with range based for loops?
..._(begin), end_(end) {}
private:
iterator begin_;
iterator end_;
};
Test code:
int main() {
int m, n;
std::istringstream in("10 20");
if ( in >> m >> n ) //using in, because std::cin cannot be used at coliru.
{
if ( m > n ) std::swap(m,n);
...
Is it pythonic to import inside functions?
...
I've broken this rule before for modules that are self-testing. That is, they are normally just used for support, but I define a main for them so that if you run them by themselves you can test their functionality. In that case I sometimes import getopt and cmd just in main, b...
How to make PDF file downloadable in HTML link?
...ry/yourfile.pdf" download>Download the pdf</a>
Compatibility: I tested this on Firefox 21 and Iron, both worked fine. It might not work on HTML5-incompatible or outdated browsers. The only browser I tested that didn't force download is IE...
Check compatibility here: http://caniuse.com/#...
How do I convert a float number to a whole number in JavaScript?
...= 3
float2int(-3.9) == -3
Performance comparison?
I've created a JSPerf test that compares performance between:
Math.floor(val)
val | 0 bitwise OR
~~val bitwise NOT
parseInt(val)
that only works with positive numbers. In this case you're safe to use bitwise operations well as Math.floor funct...
Bash tool to get nth line from a file
...probably taken ~12 minutes.
mapfile
I have bash 3.1 and therefore cannot test the mapfile solution.
Conclusion
It looks like, for the most part, it's difficult to improve upon the head tail solution. At best the sed solution provides a ~3% increase in efficiency.
(percentages calculated with th...
Static Classes In Java
...instance member
Simple example per suggestions from above:
public class TestMyStaticClass {
public static void main(String []args){
MyStaticClass.setMyStaticMember(5);
System.out.println("Static value: " + MyStaticClass.getMyStaticMember());
System.out.println("Value ...
How to implement a rule engine?
...from my database and compiling an assembly with "Rule" types, each with a "Test" method. Here is the signature for the interface that is implemented each Rule:
public interface IDataRule<TEntity>
{
/// <summary>
/// Evaluates the validity of a rule given an instance of an ent...