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Is there a performance difference between i++ and ++i in C++?
...forms deep copies. In such cases, there is no argument, ++i is perhaps an order of magnitude more efficient than i++. They key is to get in the habit of using pre-increment whenever post-increment semantics are not actually required by your algorithm, and you'll then be in the habit of writing cod...
Asynchronous Process inside a javascript for loop [duplicate]
.../rejected when the asynchronous operation is complete. Also, note that in order to use await, the containing function must be declared async.
Run asynchronous operations in parallel and use Promise.all() to collect results in order
function someFunction() {
let promises = [];
for (let ...
How do I compare two strings in Perl?
...between its arguments. ...
lt, le, ge, gt and cmp use the collation (sort) order specified by the current locale if a legacy use locale (but not use locale ':not_characters') is in effect. See perllocale. Do not mix these with Unicode, only with legacy binary encodings. The standard Unicode::Collate...
How to convert JSON to CSV format and store in a variable
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$(document).ready(function() {
var JSONData = $.getJSON("GetJsonData.php", function(data) {
var items = data;
const replacer = (key, value) => value === null ? '' : value; // specify how you want to handle null values here
const header = Object.keys(items[0]);
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How to check that an element is in a std::set?
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std::set is typically implemented with an ordered tree structure, so count() and find() will both have O(logn). Neither will iterate over all elements in the set.
– Alan
Nov 9 '09 at 16:41
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Upload files with HTTPWebrequest (multipart/form-data)
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@php-jquery-programmer, it's generic example code so the parameters have generic names. Think of "param1" as "your_well_named_param_here" and please reconsider your -1.
– Joshcodes
Mar 5 ...
Switch case with fallthrough?
...ch statement with fallthrough cases in Bash (ideally case-insensitive).
In PHP I would program it like:
5 Answers
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How to remove an item from an array in AngularJS scope?
...ete multiple persons and the Ajax requests for these deletes return out of order. If you have use the row indexes from before the Ajax call return, you'll end up removing the wrong rows.
– Joris
Jun 2 '14 at 15:44
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How can I get column names from a table in Oracle?
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You can add "ORDER by column_id" in case you want to retrieve them in the same order they were created in the table. Here are some other relevant column data from the table docs.oracle.com/cd/B19306_01/server.102/b14237/…
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Pretty-print C++ STL containers
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If I'm reading this right, in order to have a pair print as <i, j> in one function and as [i j] in another, you have to define a whole new type, with a handful of static members in order to pass that type to print_container_helper? That seems overl...