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How can I determine whether a 2D Point is within a Polygon?
...rying to create a fast 2D point inside polygon algorithm, for use in hit-testing (e.g. Polygon.contains(p:Point) ). Suggestions for effective techniques would be appreciated.
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How to redirect a url in NGINX
I need to redirect every http://test.com request to http://www.test.com . How can this be done.
4 Answers
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Design patterns or best practices for shell scripts [closed]
...ts=`getopt -s bash -o c:d:: --long config_file:,debug_level:: -- "$@"`
if test $? != 0
then
echo "unrecognized option"
exit 1
fi
eval set -- "$getopt_results"
while true
do
case "$1" in
--config_file)
CommandLineOptions__config_file="$2";
shift 2;
...
iterating over and removing from a map [duplicate]
...tring, String> map = new HashMap<String, String>() {
{
put("test", "test123");
put("test2", "test456");
}
};
for(Iterator<Map.Entry<String, String>> it = map.entrySet().iterator(); it.hasNext(); ) {
Map.Entry<String, String> entry = it.next();
if(entry...
Formatting a number with exactly two decimals in JavaScript
... "10.80"
round2Fixed(10.8); // Returns "10.80"
Various examples and tests (thanks to @t-j-crowder!):
function round(value, exp) {
if (typeof exp === 'undefined' || +exp === 0)
return Math.round(value);
value = +value;
exp = +exp;
if (isNaN(value) || !(typeof exp === ...
Maven command to list lifecycle phases along with bound goals?
... | default-compile | compile
maven-resources-plugin | process-test-resources | default-testResources | testResources
maven-compiler-plugin | test-compile | default-testCompile | testCompile
maven-surefire-plugin | test | default-test | test
mav...
Laravel Controller Subfolder routing
...
For Laravel 5.3 above:
php artisan make:controller test/TestController
This will create the test folder if it does not exist, then creates TestController inside.
TestController will look like this:
<?php
namespace App\Http\Controllers\test;
use Illuminate\Http\Reques...
PHP's array_map including keys
...
Not with array_map, as it doesn't handle keys.
array_walk does:
$test_array = array("first_key" => "first_value",
"second_key" => "second_value");
array_walk($test_array, function(&$a, $b) { $a = "$b loves $a"; });
var_dump($test_array);
// array(2) {
// ["...
How do I tell if a regular file does not exist in Bash?
...
The test command ([ here) has a "not" logical operator which is the exclamation point (similar to many other languages). Try this:
if [ ! -f /tmp/foo.txt ]; then
echo "File not found!"
fi
...
The most accurate way to check JS object's type?
...
That test on jsPerf isn't quite accurate. Those tests are not equal (testing for the same thing). E.g., typeof [] returns "object", typeof {} also returns "object", even though one is an object Array and the other is an object Ob...