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Using variables inside a bash heredoc
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Strange \n in base64 encoded string in Ruby
The inbuilt Base64 library in Ruby is adding some '\n's. I'm unable to find out the reason. For this special example:
6 Ans...
Why does base64 encoding require padding if the input length is not divisible by 3?
What is the purpose of padding in base64 encoding. The following is the extract from wikipedia:
3 Answers
...
Using jquery to get element's position relative to viewport
... to be combined with scrollTop and scrollLeft as shown in this diagram:
Demo:
function getViewportOffset($e) {
var $window = $(window),
scrollLeft = $window.scrollLeft(),
scrollTop = $window.scrollTop(),
offset = $e.offset(),
rect1 = { x1: scrollLeft, y1: scrollTop, x2...
Can you create nested WITH clauses for Common Table Expressions?
...s a recursive query:
WITH y
AS
(
SELECT x, y, z
FROM MyTable
WHERE [base_condition]
UNION ALL
SELECT x, y, z
FROM MyTable M
INNER JOIN y ON M.[some_other_condition] = y.[some_other_condition]
)
SELECT *
FROM y
You may not need this functionality. I've done the following just to o...
Javascript equivalent of Python's zip function
... efficient way of merging [1,2] and [7,8] into [[1,7], [2,8]]
Note: the base types such as false and undefined do not posess a prototypal object-hierarchy and thus do not expose a toString function. Hence these are shown as empty in the output.
As parseInt's second argument is the base/number rad...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...ing App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does not have multitouch capabilities built in. Adding multitouch is a popular request, and MIT App Inventor might e...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...ing App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does not have multitouch capabilities built in. Adding multitouch is a popular request, and MIT App Inventor might e...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...ing App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does not have multitouch capabilities built in. Adding multitouch is a popular request, and MIT App Inventor might e...
使用App Inventor扩展实现多点触控：Rotation Detector · App Inventor 2 中文网
...ing App Inventor extensions to implement multitouch: Rotation detector
A demo app with rotation detector extension component
How to build rotation detector extension
App Inventor does not have multitouch capabilities built in. Adding multitouch is a popular request, and MIT App Inventor might e...