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How do I calculate square root in Python?
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249
sqrt=x**(1/2) is doing integer division. 1/2 == 0.
So you're computing x(1/2) in the first ins...
How to get name of calling function/method in PHP? [duplicate]
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148
The debug_backtrace() function is the only way to know this, if you're lazy it's one more reaso...
Custom li list-style with font-awesome icon
...t;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<ul>
<li>Item one</li>
<li>Item two</li>
</ul>
Adjust the padding/font-size/etc to your liking, and that's it. Here's the usual fiddle: ht...
Why doesn't nodelist have forEach?
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94
NodeList now has forEach() in all major browsers
See nodeList forEach() on MDN.
Original answer
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Getting the difference between two sets
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204
Try this
test2.removeAll(test1);
Set#removeAll
Removes from this set all of its element...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
... 客户端正在断开与服务器的连接。
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4
ConnectionAborted
由于错误或中断，无法建立连接。可以通过属性 LastErrorCode 和 LastErrorMessage 查看错误原因。
Connect
常量属性：
为了简化状态查询，...
How do I pass command line arguments to a Node.js program?
...hree four
0: node
1: /Users/mjr/work/node/process-2.js
2: one
3: two=three
4: four
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Nexus 7 not visible over USB via “adb devices” from Windows 7 x64
...yMike Hanafey
5,17633 gold badges1515 silver badges2424 bronze badges
3
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How do I find a “gap” in running counter with SQL?
... in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3.
20 Answers
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Remove an item from a dictionary when its key is unknown
...nt:
>>> some_dict = {1: "Hello", 2: "Goodbye", 3: "You say yes", 4: "I say no"}
>>> value_to_remove = "You say yes"
>>> some_dict = {key: value for key, value in some_dict.items() if value is not value_to_remove}
>>> some_dict
{1: 'Hello', 2: 'Goodbye', 3: 'You s...