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How can I declare and define multiple variables in one line using C++?
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Possible approaches:
Initialize all local variables with zero.
Have an array, memset or {0} the array.
Make it global or static.
Put them in struct, and memset or have a constructor that would initialize
them to zero.
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Obtain form input fields using jQuery?
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$('#myForm').submit(function() {
// get all the inputs into an array.
var $inputs = $('#myForm :input');
// not sure if you wanted this, but I thought I'd add it.
// get an associative array of just the values.
var values = {};
$inputs.each(function() {
value...
How are Python's Built In Dictionaries Implemented?
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Python hash table is just a contiguous block of memory (sort of like an array, so you can do an O(1) lookup by index).
Each slot in the table can store one and only one entry. This is important.
Each entry in the table is actually a combination of the three values: < hash, key, value >. T...
Selecting only first-level elements in jquery
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jQuery.extend(jQuery.expr[':'], {
topmost: function (e, index, match, array) {
for (var i = 0; i < array.length; i++) {
if (array[i] !== false && $(e).parents().index(array[i]) >= 0) {
return false;
}
}
return true;
}
});
Utilizing this, the sol...
PHP script to loop through all of the files in a directory?
...($directory)) {
exit('Invalid diretory path');
}
$files = array();
foreach (scandir($directory) as $file) {
if ($file !== '.' && $file !== '..') {
$files[] = $file;
}
}
var_dump($files);
?>
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Is there a query language for JSON?
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The built-in array.filter() method makes most of these so-called javascript query libraries obsolete
You can put as many conditions inside the delegate as you can imagine: simple comparison, startsWith, etc. I haven't tested but you coul...
split string only on first instance of specified character
In my code I split a string based on _ and grab the second item in the array.
17 Answers
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How to search a specific value in all tables (PostgreSQL)?
...ecific value.
It takes as arguments the value to search in text format, an array of table names to search into (defaults to all tables) and an array of schema names (defaults all schema names).
It returns a table structure with schema, name of table, name of column and pseudo-column ctid (non-durab...
Is a Python list guaranteed to have its elements stay in the order they are inserted in?
...of other objects. Both lists and sets are a type of collection. Tuples and Arrays are normally not considered to be collections. Some languages consider maps (containers that describe associations between different objects) to be a type of collection as well.
This naming scheme holds true for all p...
When to use std::size_t?
...anteed to be able to express the maximum size of any object (including any array) in C++. By extension it is also guaranteed to be big enough for any array index so it is a natural type for a loop by index over an array.
If you are just counting up to a number then it may be more natural to use eit...