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Canvas width and height in HTML5
...width are the logical canvas dimensions used for drawing and are different from the style.height and style.width CSS attributes. If you don't set the CSS attributes, the intrinsic size of the canvas will be used as its display size; if you do set the CSS attributes, and they differ from the canvas d...
Output array to CSV in Ruby
...er opaque looking back at it. :) It's basically extracting certain columns from the original census table into a subset.
– tamouse
Nov 13 '13 at 16:46
3
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how to break the _.each function in underscore.js
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You can't break from the each method—it emulates the native forEach method's behavior, and the native forEach doesn't provide to escape the loop (other than throwing an exception).
However, all hope is not lost! You can use the Array.ever...
What does a Ajax call response like 'for (;;); { json data }' mean? [duplicate]
...ect constructor, which allows one to access the information being returned from the server without a wrapping function.
However, that is simply not possible in this case: the reason it works at all is that a bare array (one possible result of many JSON APIs, such as the famous Gmail example) is a v...
搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...ec 29 20:12:02.953 [rsStart] replSet can't get local.system.replset config from self or any seed (EMPTYCONFIG)
Sun Dec 29 20:12:02.953 [rsStart] replSet info you may need to run replSetInitiate -- rs.initiate() in the shell -- if that is not already done
5、初始化副本集
在三台机器...
Ignoring an already checked-in directory's contents?
...out sub-directories. Now I just created a script to copy these assets over from another, structured directory, with several levels of sub-directories.
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Rotating a point about another point (2D)
...inate system on the screen is left-handed, i.e. the x coordinate increases from left to right and the y coordinate increases from top to bottom. The origin, O(0, 0) is at the upper left corner of the screen.
A clockwise rotation around the origin of a point with coordinates (x, y) is given by the...
Best way to store JSON in an HTML attribute?
...And then how do I decode that when I want to read it in jQuery? — Decode from the attribute? The browser will do that when it parses the HTML into a DOM. And then how do I write it back in using jQuery in the same way that it was in PHP? — You're setting attributes of DOM nodes, not generating r...
How to store decimal values in SQL Server?
... => 9
20-28 => 13
29-38 => 17
It can store from 0 up to 9 999 999.99 (7 digit infront + 2 digit behind decimal point = total 9 digit), which is big enough for most of the values.
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.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?
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From JetBrains Intellij Idea inspection:
There are two styles to convert a collection to an array: either using
a pre-sized array (like c.toArray(new String[c.size()])) or
using an empty array (like c.toArray(new Stri...