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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...以自动投票，选举出新的Master，并引导其余的Slave服务器连接新的Master，
而这个过程对于应用是透明的。可以说MongoDB的副本集是自带故障转移功能的主从复制。
1 相对于传统主从模式的优势
传统的主从模式，需要手工指定...
Better way to check variable for null or empty string?
Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty?
10 Answers
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Get a random item from a JavaScript array [duplicate]
...tion if you want: npmjs.com/package/lodash.sample
– XåpplI'-I0llwlg'I -
Dec 4 '15 at 11:32
4
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How to format numbers as currency string?
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@JuliendePrabère Please give an example of a long number which doesn't work with this approach.
– VisioN
Mar 25 '14 at 10:53
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Capitalize words in string [duplicate]
... This doesn't seem to work for nordic characters ä, ö, and å. For example päijät-häme becomes PäIjäT-HäMe
– Markus Meskanen
Dec 15 '16 at 12:18
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How to create a drop-down list?
...presso</item>
<item>Mocha</item>
<item>Caffè Americano</item>
<item>Cafe Zorro</item>
</string-array>
MainActivity
Spinner staticSpinner = (Spinner) findViewById(R.id.static_spinner);
// Create an ArrayAdapter using the string a...
How do I read text from the (windows) clipboard from python?
...on-ASCII characters, too.
Tested characters include ±°©©αβγθΔΨΦåäö
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How to compare two revisions in Bitbucket?
...id with the current version of Bitbucket?
– Martin Stålberg
Oct 31 '17 at 10:03
I just tried this with two commits fr...
Declaring array of objects
... answered Apr 1 '13 at 11:21
Frédéric HamidiFrédéric Hamidi
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Understanding ibeacon distancing
... basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this?
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