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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
...ted drive on ec2? I really do not understand. I attached a volume on ec2 formatted the drive as root and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running
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how to calculate binary search complexity
...cal way of seeing it, though not really complicated. IMO much clearer as informal ones:
The question is, how many times can you divide N by 2 until you have 1? This is essentially saying, do a binary search (half the elements) until you found it. In a formula this would be this:
1 = N / 2x
mu...
Loading local JSON file
...jest.dontMock('./data.json'); or else the result is empty. Might be useful for someone out there :)
– Håvard Geithus
Jun 28 '15 at 17:43
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Percentage width in a RelativeLayout
I am working on a form layout for a Login Activity in my Android App. The image below is how I want it to look like:
14 A...
How to allow to accept only image files?
...rowsers from uploading anything at all, so be sure to test your target platforms well.
For detailed browser support, see http://caniuse.com/#feat=input-file-accept
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How to import CSV file data into a PostgreSQL table?
...file to the table:
COPY zip_codes FROM '/path/to/csv/ZIP_CODES.txt' WITH (FORMAT csv);
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Populating a database in a Laravel migration file
...hema::create(), because the create method has to finish making the table before you can insert stuff. Try this instead:
public function up()
{
// Create the table
Schema::create('users', function($table){
$table->increments('id');
$table->string('email', 255);
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How can I bind to the change event of a textarea in jQuery?
...or mouse click and paste or cut. Is there a jQuery event that can trigger for all those events?
11 Answers
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Worst security hole you've seen? [closed]
...uantity of books and Amazon would credit your account (and presumably wait for you to ship it to them). See 0:47 at youtube.com/watch?v=-hxX_Q5CnaA
– Jeff Moser
Sep 29 '09 at 20:18
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jQuery hasAttr checking to see if there is an attribute on an element [duplicate]
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var attr = $(this).attr('name');
// For some browsers, `attr` is undefined; for others,
// `attr` is false. Check for both.
if (typeof attr !== typeof undefined && attr !== false) {
// ...
}
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