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How to unset a JavaScript variable?
...hen the target isn't an object property. e.g.,
(function() {
var foo = 123;
delete foo; // wont do anything, foo is still 123
var bar = { foo: 123 };
delete bar.foo; // foo is gone
}());
But since global variables are actually members of the window object, it works.
When prototype c...
Convert text into number in MySQL query
...
You can use CAST() to convert from string to int. e.g. SELECT CAST('123' AS INTEGER);
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Convert string to integer type in Go?
... fmt.Printf("i=%d, type: %T\n", i, i)
}
Output (if called with argument "123"):
i=123, type: int
i=123, type: int64
i=123, type: int
Parsing Custom strings
There is also a handy fmt.Sscanf() which gives even greater flexibility as with the format string you can specify the number format (like ...
Is there a way of having git show lines added, lines changed and lines removed?
...ified lines. For example:
git diff HEAD c9af3e6136e8aec1f79368c2a6164e56bf7a7e07 | diffstat -C -m
The -C option is for getting colourised output; the -m option is for showing the number of modified lines.
Sample output:
app/controllers/application_controller.rb | 30 -------------------!!!
1 ...
Do Git tags only apply to the current branch?
... over the contents of a commit; e.g.: 6f6b5997506d48fc6267b0b60c3f0261b6afe7a2)
Branches come into play only indirectly:
At the time of creating a tag, by implying the commit that the tag will point to:
Not specifying a target for a tag defaults to the current branch's most recent commit ...
Restful way for deleting a bunch of items
...nd is using the array operator:
DELETE /api/resources?ids[]=1a2b3c4d-5e6f-7a8b-9c0d-1e2f3a4b5c6d&ids[]=7e8f9a0b-1c2d-3e4f-5a6b-7c8d9e0f1a2b
In this way you are attacking to the Delete Collection endpoint but filtering the deletion with a querystring in the right way.
...
jQuery UI Sortable Position
...rting has stopped. event Type: Event
Piece of code:
http://jsfiddle.net/7a1836ce/
<script type="text/javascript">
var sortable = new Object();
sortable.s1 = new Array(1, 2, 3, 4, 5);
sortable.s2 = new Array(1, 2, 3, 4, 5);
sortable.s3 = new Array(1, 2, 3, 4, 5);
sortable.s4...
How to determine a Python variable's type?
...
Use the type() builtin function:
>>> i = 123
>>> type(i)
<type 'int'>
>>> type(i) is int
True
>>> i = 123.456
>>> type(i)
<type 'float'>
>>> type(i) is float
True
To check if a variable is of a given type, u...
How to print instances of a class using print()?
....it will act the following way in the Python shell:
>>> t = Test(123, 456)
>>> t
<Test a:123 b:456>
>>> print repr(t)
<Test a:123 b:456>
>>> print(t)
From str method of Test: a is 123, b is 456
>>> print(str(t))
From str method of Test: a is ...
REST URI convention - Singular or plural name of resource while creating it
...ll likely error, as this request doesn't make any sense, whereas /resource/123 makes perfect sense.
Using /resource instead of /resources is similar to how you would do this if you were working with, say, a file system and a collection of files and /resource is the "directory" with the individual 1...