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Get index of array element faster than O(n)
Given I have a HUGE array, and a value from it. I want to get index of the value in array. Is there any other way, rather then call Array#index to get it? The problem comes from the need of keeping really huge array and calling Array#index enormous amount of times.
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Detecting Browser Autofill
How do you tell if a browser has auto filled a text-box? Especially with username & password boxes that autofill around page load.
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COALESCE Function in TSQL
...parameters, the field being evaluated for NULL, and the result you want if it is evaluated as NULL. COALESCE will take any number of parameters, and return the first value encountered that isn't NULL.
There's a much more thorough description of the details here
http://www.mssqltips.com/sqlserver...
shared_ptr to an array : should it be used?
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With C++17, shared_ptr can be used to manage a dynamically allocated array. The shared_ptr template argument in this case must be T[N] or T[]. So you may write
shared_ptr<int[]> sp(new int[10]);
From n4659, [util.smar...
How do you create a toggle button?
I want to create a toggle button in html using css. I want it so that when you click on it , it stays pushed in and than when you click it on it again it pops out.
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How to set Python's default version to 3.x on OS X?
...sic default Python version is 2.7. I downloaded Python 3.3 and want to set it as default.
21 Answers
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“Debug only” code that should run only when “turned on”
... some C# "debug only" code that only runs if the person debugging requests it. In C++, I used to do something similar to the following:
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Using an RDBMS as event sourcing storage
...r's Event Store implementation consists basically of one table called "Commits" with a BLOB field "Payload". This is pretty much the same as in Ncqrs, only that it serializes the event's properties in binary format (which, for instance, adds encryption support).
Greg Young recommends a similar app...
jQuery .ready in a dynamically inserted iframe
... is finished loading?).
You can obtain control over the iframe load event with the following code:
function callIframe(url, callback) {
$(document.body).append('<IFRAME id="myId" ...>');
$('iframe#myId').attr('src', url);
$('iframe#myId').load(function() {
callback(this);...
How do you append to a file in Python?
How do you append to the file instead of overwriting it? Is there a special function that appends to the file?
13 Answers
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