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Check if array is empty or null
...er check if ($(this)). It may not have any DOM objects inside it, but you can check that with $(this).length if you need to, but that is not necessary here because the .each() loop wouldn't run if there were no items so $(this) inside your .each() loop will always be something.
It's inefficient to ...
Import module from subfolder
...Foo.dirFoo1.foo1 import Foo1
from dirFoo.dirFoo2.foo2 import Foo2
Or you can use relative imports:
from .dirfoo1.foo1 import Foo1
from .dirfoo2.foo2 import Foo2
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Consequences of using graft in Mercurial
... a number of merges. It will start with this merge:
M = three_way_merge(local=D, other=F, base=E)
If we write +d for the delta between the states C and D, then we start with:
+d +e +f
---- C ---- D ---- E ---- F ----
Turn the graph 90 degrees clockwise and the above three-way m...
from jquery $.ajax to angular $http
...
The AngularJS way of calling $http would look like:
$http({
url: "http://example.appspot.com/rest/app",
method: "POST",
data: {"foo":"bar"}
}).then(function successCallback(response) {
// this callback will be called asynchro...
Mongoose indexing in production code
...ndex in production. Once the index has been added, subsequent ensureIndex calls will simply see that the index already exists and then return. So it only has an effect on performance when you're first creating the index, and at that time the collections are often empty so creating an index would b...
Add a number to each selection in Sublime Text 2, incremented once per selection
...
{ "keys": ["YOUR_SHORTCUT"], "command": "increment_selection" }
Now you can place the cursors where you need:
Insert the number the counter should start from (in this case 1):
Select the number you typed (shift<—):
Type the shortcut:
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How to handle multiple heterogeneous inputs with Logstash?
Let's say you have 2 very different types of logs such as technical and business logs and you want:
3 Answers
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How do I open links in Visual Studio in my web browser and not in Visual Studio?
If there is a URL in a source file comment, I can "CTRL + click to follow link." However, when I do this, the link opens inside Visual Studio. How can I make it open in my web browser--in my case, Google Chrome?
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How can I split and parse a string in Python?
...", 1).
If you know for a fact that the string contains an underscore, you can even unpack the LHS and RHS into separate variables:
In [8]: lhs, rhs = "2.7.0_bf4fda703454".split("_", 1)
In [9]: lhs
Out[9]: '2.7.0'
In [10]: rhs
Out[10]: 'bf4fda703454'
An alternative is to use partition(). The us...
Do c++11 lambdas capture variables they don't use?
When I use [=] to indicate that I would like all local variables to be captured by value in a lambda, will that result in all local variables in the function being copied, or just all local variables that are used by the lambda ?
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