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How to check if element has any children in Javascript?
Simple question, I have an element which I am grabbing via .getElementById () . How do I check if it has any children?
8 A...
What is Ad Hoc Query?
...y type out where you need it
var newSqlQuery = "SELECT * FROM table WHERE id = " + myId;
...which is an entirely different query each time that line of code is executed, depending on the value of myId. The opposite of an ad hoc query is a predefined query such as a Stored Procedure, where you hav...
Setting default permissions for newly created files and sub-directories under a directory in Linux?
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To get the right ownership, you can set the group setuid bit on the directory with
chmod g+rwxs dirname
This will ensure that files created in the directory are owned by the group. You should then make sure everyone runs with umask 002 or 007 or something of that nature---t...
iPhone app signing: A valid signing identity matching this profile could not be found in your keycha
...blem yesterday. Now, after signing to the developer portal, for every invalid provisioning profile have a button "Renew". After renewing and downloading updated provisioning profile all seems to work as expected, so problem is definitely solved :)
Update: you may have to contact Apple to get a "Ren...
Rails update_attributes without save?
.../active_record/attribute_assignment.rb
Another cheat sheet:
http://www.davidverhasselt.com/set-attributes-in-activerecord/#cheat-sheet
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How do I convert a string to enum in TypeScript?
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@Vojta said right. Its not working in VS 2012. This one worked but var color: Color = (<any>Color)[green];
– Faisal Mq
Sep 29 '15 at 10:02
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What are the best practices for JavaScript error handling?
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An immensely interesting set of slides on Enterprise JavaScript Error Handling can be found at http://www.devhands.com/2008/10/javascript-error-handling-and-general-best-practices/
In short it summarizes:
Assume your code will fail
Log errors to the server...
Maximum number of threads per process in Linux?
... get E667: Fsync failed when I try to save on vi.
– Siddharth
May 4 '13 at 5:04
4
@dragosrsuperco...
Defining a HTML template to append using JQuery
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You could decide to make use of a templating engine in your project, such as:
mustache
underscore.js
handlebars
If you don't want to include another library, John Resig offers a jQuery solution, similar to the one below.
Browsers a...
What is PostgreSQL explain telling me exactly?
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I am mystified why people think slide decks make good technical documentation. A video of the talk might be helpful, but the information density of that slide deck is very close to zero. In the first six slides (1/5th of the total), there is exactly 1 sentenc...