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Benefits of prototypal inheritance over classical?
...o see closures and dynamic typing; but for the life of me can't figure out what benefits are to be had from object instances using other instances for inheritance.
...
How to create a dialog with “yes” and “no” options?
... for confirm(), which displays a prompt and returns true or false based on what the user decided:
if (confirm('Are you sure you want to save this thing into the database?')) {
// Save it!
console.log('Thing was saved to the database.');
} else {
// Do nothing!
console.log('Thing wa...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...used to create a new model object in memory, so don't use this callback if what you want is just to set default values the first time you add a new record. If you want to do that, use before_create and not before_save; before_create is run before creating the new db record and after the first initia...
How to get unique values in an array
...javascript-nerd answer that should only be used by someone who understands what it means, and possibly not even then. What it is saying, is that writing if (~a.indexOf(b)) ... is identical to writing the longer if (a.indexOf(b) == -1) ....
– Orwellophile
Jul 1...
Simple explanation of MapReduce?
... => x * 2 is a function to be executed against the elements in [1,2,3]. What happens is that the program takes each item, execute (x => x * 2) against it by making x equals to each item, and produce a list of the results.
1 : 1 => 1 * 2 : 2
2 : 2 => 2 * 2 : 4
3 : 3 => 3 * 2 : 6 ...
How to convert a string with comma-delimited items to a list in Python?
...t(word)
>>> L
['a', 'b', 'c']
>>> ''.join(L)
'abc'
But what you're dealing with right now, go with @Cameron's answer.
>>> word = 'a,b,c'
>>> L = word.split(',')
>>> L
['a', 'b', 'c']
>>> ','.join(L)
'a,b,c'
...
What is the difference between __dirname and ./ in node.js?
...ir2
__dirname = /dir1/dir2
Your working directory is /dir1/dir2 so that's what . resolves to. Since pathtest.js is located in /dir1/dir2 that's what __dirname resolves to as well.
However, if you run the script from /dir1
cd /dir1
node dir2/pathtest.js
you get
. = /dir1
__dirname = /dir1/dir2
In ...
Https Connection Android
...et android know of your certificate. If you want to just accept no matter what, then use this pseudo-code to get what you need with the Apache HTTP Client:
SchemeRegistry schemeRegistry = new SchemeRegistry ();
schemeRegistry.register (new Scheme ("http",
PlainSocketFactory.getSocketFactory (...
How do I round a decimal value to 2 decimal places (for output on a page)
...idn't use bankers rounding
Didn't keep the value as a decimal.
This is what I would use:
decimal.Round(yourValue, 2, MidpointRounding.AwayFromZero);
http://msdn.microsoft.com/en-us/library/9s0xa85y.aspx
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Why would one omit the close tag?
...ning class includes to supplant inefficient file-by-file autoloading.)
Somewhat uncommonly the opening <?php is characterized as PHPs shebang (and fully feasible per binfmt_misc), thereby validating the redundancy of a corresponding close tag.
There's an obvious advise discrepancy between classic...