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JavaScript is in array
...if the result > -1 and false if result === -1
– bm_i
Nov 5 '12 at 19:01
11
@bm_i Which faster?...
Add Foreign Key to existing table
...
To add a foreign key (grade_id) to an existing table (users), follow the following steps:
ALTER TABLE users ADD grade_id SMALLINT UNSIGNED NOT NULL DEFAULT 0;
ALTER TABLE users ADD CONSTRAINT fk_grade_id FOREIGN KEY (grade_id) REFERENCES grades(id);
...
How to cherry pick a range of commits and merge into another branch?
...ue".
or skip this patch, and instead run "git rebase --skip"
or cancel the all thing with a "git rebase --abort" (and put back the integration branch on the tmp branch)
After that rebase --onto, integration will be back at the last commit of the integration branch (that is "tmp" branch + all the re...
Static variables in member functions
...ere will be a static int i (say foo<int>::i) and separate for foo<string> there will be a separate static int i (say foo<string>::i) and so on. i will be incremented separately for foo<int> than from the foo<string>. Hope that clears the doubt.
– i...
How to architect an Ember.js application
...assotti's answer, you should not be doing that for production code. Especially when we have such a powerful and easy to use project like Ember-CLI to show us the Yehuda approved happy path.
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Converting milliseconds to a date (jQuery/JavaScript)
... = new Date().getTime();
var date = new Date(time);
alert(date.toString()); // Wed Jan 12 2011 12:42:46 GMT-0800 (PST)
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How does the vim “write with sudo” trick work?
...: the shortcut itself.
execute '...': a command that execute the following string.
silent!: run it silently
write !sudo tee % >/dev/null: the OP question, added a redirection of messages to NULL to make a clean command
<bar> edit!: this trick is the cherry of the cake: it calls also the ed...
How to rollback a specific migration?
...nt to go back.
For example:
rake db:rollback STEP=5
Will also rollback all the migration that happened later (4, 3, 2 and also 1).
To roll back all migrations back to (and including) a target migration, use: (This corrected command was added AFTER all the comments pointing out the error in the ...
How to check file MIME type with javascript before upload?
...r = "";
for(var i = 0; i < arr.length; i++) {
header += arr[i].toString(16);
}
console.log(header);
// Check the file signature against known types
};
fileReader.readAsArrayBuffer(blob);
You can then determine the real MIME type like so (more file signatures here and here):
swit...
Creating a textarea with auto-resize
...I would have many many many such textareas (about as much as one would normally have lines in a large text document). In that case it is really slow. (In Firefox it's insanely slow.) So I really would like an approach that uses pure CSS. This would be possible with contenteditable, but I want it to ...