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Simplest way to wait some asynchronous tasks complete, in Javascript?
...JavaScript. In that case I advice looking at async module and use async.parallel(...). You will find this module really helpful - it was developed to solve the problem you are struggling with. Your code may look like this
var async = require('async');
var calls = [];
['aaa','bbb','ccc'].forEach(f...
What is the exact meaning of Git Bash?
... , fetch , and merge . But I still don't know what Git Bash itself actually is!
4 Answers
...
How to map and remove nil values in Ruby
...
Ruby 2.7+
There is now!
Ruby 2.7 is introducing filter_map for this exact purpose. It's idiomatic and performant, and I'd expect it to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your ...
Convert xlsx to csv in Linux with command line
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The Gnumeric spreadsheet application comes with a command line utility called ssconvert that can convert between a variety of spreadsheet formats:
$ ssconvert Book1.xlsx newfile.csv
Using exporter Gnumeric_stf:stf_csv
$ cat newfile.csv
Foo,Bar,Baz
1,2,3
123.6,7.89,
2012/05/14,,
The,last,Line
...
How to generate all permutations of a list?
How do you generate all the permutations of a list in Python, independently of the type of elements in that list?
33 Answer...
Is there a pattern for initializing objects created via a DI container
...
{
get { return this.runTimeParam; }
}
}
Notice how this allows us to protect the class' invariants by use of the readonly keyword. No smelly Initialize methods are necessary.
An IMyIntfFactory implementation may be as simple as this:
public class MyIntfFactory : IMyIntfFactory
{...
Passing arguments forward to another javascript function
...manipulate that before passing it along, for example: var copy = [].slice.call(arguments); <remove what you want> myFunc.apply(this, copy);
– Nick Craver♦
Feb 17 '12 at 11:18
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How to reset Django admin password?
....models import User
User.objects.filter(is_superuser=True)
will list you all super users on the system. if you recognize yur username from the list:
usr = User.objects.get(username='your username')
usr.set_password('raw password')
usr.save()
and you set a new password (:
...
How would Git handle a SHA-1 collision on a blob?
...ase. This is with version 2.7.9~rc0+next.20151210 (Debian version). I basically just reduced the hash size from 160-bit to 4-bit by applying the following diff and rebuilding git:
--- git-2.7.0~rc0+next.20151210.orig/block-sha1/sha1.c
+++ git-2.7.0~rc0+next.20151210/block-sha1/sha1.c
@@ -246,6 +246...
How to get a specific output iterating a hash in Ruby?
...uld add, that in 1.8 the items will be iterated in random order (well, actually in an order defined by Fixnum's hashing function), while in 1.9 it will be iterated in the order of the literal.
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