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搭建高可用mongodb集群（二）—— 副本集 - 大数据 & AI - 清泛网 - 专注C/...
...集测试文件夹
#存放整个mongodb文件
mkdir -p /data/mongodbtest/replset
#存放mongodb数据文件
mkdir -p /data/mongodbtest/replset/data
#进入mongodb文件夹
cd /data/mongodbtest
3、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-li...
jQuery SVG, why can't I addClass?
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I tested this, and .classList appears to be undefined for svg sub-elements, at least in Chrome.
– Chris Jaynes
Apr 25 '13 at 18:36
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Maximum size of a element
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Updated 10/13/2014
All tested browsers have limits to the height/width of canvas elements, but many browsers also limit the total area of the canvas element. The limits are as follows for the browsers I'm able to test:
Chrome:
Maximum height/widt...
`testl` eax against eax?
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It tests whether eax is 0, or above, or below. In this case, the jump is taken if eax is 0.
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Send response to all clients except sender
... 1.0):
// sending to sender-client only
socket.emit('message', "this is a test");
// sending to all clients, include sender
io.emit('message', "this is a test");
// sending to all clients except sender
socket.broadcast.emit('message', "this is a test");
// sending to all clients in 'game' room(c...
What is the most efficient string concatenation method in python?
...ore-or-less the same)
On the strength of that, the array module may be fastest if you can shoehorn your problem into it. But ''.join is probably fast enough and has the benefit of being idiomatic and thus easier for other python programmers to understand.
Finally, the golden rule of optimization:...
Check if a string is html or not
...ter regex to use to check if a string is HTML is:
/^/
For example:
/^/.test('') // true
/^/.test('foo bar baz') //true
/^/.test('<p>fizz buzz</p>') //true
In fact, it's so good, that it'll return true for every string passed to it, which is because every string is HTML. Seriously, ...
Need some clarification about beta/alpha testing on the developer console
...Four types of releases on play console for android developers;
1. Internal testing - It means you wanna share your app among the decided members. It means you have to put their Gmail into the testers list. This is usually for employees.
2. Alpha testing - Same as internal testing, but this time you ...
Use NUnit Assert.Throws method or ExpectedException attribute?
I have discovered that these seem to be the two main ways of testing for exceptions:
5 Answers
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Difference between freeze and seal
...jects
Safari: sealed or frozen objects enumerate 92% slower (as of 2014)
Tests: Sealed objects, Frozen objects.
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