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PostgreSQL - max number of parameters in “IN” clause?
...llowing is a code comment from line 870:
/*
* We try to generate a ScalarArrayOpExpr from IN/NOT IN, but this is only
* possible if the inputs are all scalars (no RowExprs) and there is a
* suitable array type available. If not, we fall back to a boolean
* condition tree with multiple copies o...
.rar, .zip files MIME Type
...eMime = $fileInfo->file($_FILES['upfile']['tmp_name']);
$validMimes = array(
'zip' => 'application/zip',
'rar' => 'application/x-rar',
);
$fileExt = array_search($fileMime, $validMimes, true);
if($fileExt != 'zip' && $fileExt != 'rar')
throw new RuntimeExceptio...
Pass a JavaScript function as parameter
...ou could also use the apply function and have a third parameter that is an array of the arguments, like such:
function eat(food1, food2)
{
alert("I like to eat " + food1 + " and " + food2 );
}
function myFunc(callback, args)
{
//do stuff
//...
//execute callback when finished
ca...
How to get multiple selected values of select box in php?
...
If you want PHP to treat $_GET['select2'] as an array of options just add square brackets to the name of the select element like this: <select name="select2[]" multiple …
Then you can acces the array in your PHP script
<?php
header("Content-Type: text/plain");
f...
Samples of Scala and Java code where Scala code looks simpler/has fewer lines?
...public static void main(String[] args) {
List<String> keywords = Arrays.asList("Apple", "Ananas", "Mango", "Banana", "Beer");
Map<Character, List<String>> result = new HashMap<Character, List<String>>();
for(String k : keywords) {
char firstChar =...
What is cURL in PHP?
...php
// Here is the data we will be sending to the service
$some_data = array(
'message' => 'Hello World',
'name' => 'Anand'
);
$curl = curl_init();
// You can also set the URL you want to communicate with by doing this:
// $curl = curl_init('http://localhost/echoservice...
Center/Set Zoom of Map to cover all visible Markers?
...
You need to use the fitBounds() method.
var markers = [];//some array
var bounds = new google.maps.LatLngBounds();
for (var i = 0; i < markers.length; i++) {
bounds.extend(markers[i]);
}
map.fitBounds(bounds);
Documentation from developers.google.com/maps/documentation/javascript...
What does the ^ operator do in Java?
...a lot of programming tricks like
XORing of all the elements in a boolean array would tell you if the array has odd number of true elements
If you have an array with all numbers repeating even number of times except one which repeats odd number of times you can find that by XORing all elements.
Swa...
Which Boost features overlap with C++11?
...
TR1 (they are marked in the documentation if those are TR1 libraries)
Array → std::array
Bind → std::bind
Enable If → std::enable_if
Function → std::function
Member Function → std::mem_fn
Random → <random>
Ref → std::ref, std::cref
Regex → <regex>
Result Of → std::...
From io.Reader to string in Go
... because converting to a string requires doing a complete copy of the byte array. Here is the proper (non-efficient) way to do what you want:
buf := new(bytes.Buffer)
buf.ReadFrom(yourReader)
s := buf.String() // Does a complete copy of the bytes in the buffer.
This copy is done as a protection m...