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How does '20 seconds' work in Scala?
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There are a few things going on.
First, Scala allows dots and parens to be omitted from many method calls, so 20 seconds is equivalent to 20.seconds()*.
Second, an "implicit conversion" is applied. Since 20 is an Int and Int has no seconds method, the compiler searches for an impli...
libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
..._init()初始化libcurl
2. 调用 curl_easy_init()函数得到 easy interface型指针
3. 调用curl_easy_setopt设置传输选项
4. 根据curl_easy_setopt设置的传输选项，实现回调函数以完成用户特定任务
5. 调用curl_easy_perform（）函数完成...
What datatype to use when storing latitude and longitude data in SQL databases? [duplicate]
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For longitudes use: Decimal(9,6), and latitudes use: Decimal(8,6)
If you're not used to precision and scale parameters, here's a format string visual:
###.###### and ##.######
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Why does Popen.communicate() return b'hi\n' instead of 'hi'?
...ing of the bytes you received from the subprocess, you can use decode() to convert them into a printable str:
>>> print(b'hi\n'.decode('ascii'))
hi
Of course, this specific example only works if you actually are receiving ASCII from the subprocess. If it's not ASCII, you'll get an excep...
Efficient way to remove ALL whitespace from String?
I'm calling a REST API and am receiving an XML response back. It returns a list of a workspace names, and I'm writing a quick IsExistingWorkspace() method. Since all workspaces consist of contiguous characters with no whitespace, I'm assuming the easiest way to find out if a particular workspace i...
How do I center a window onscreen in C#?
...rimitive techniques simply because it works on .NET Compact Framework 3.5, and this also explain why I don't use Screen.FromControl(this) but keep it to PrimaryScreen. (I'm developing an application under hardware constraint) :-)
– Yeo
Oct 27 '15 at 14:45
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Programmatically relaunch/recreate an activity?
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UPDATE: Android SDK 11 added a recreate() method to activities.
I've done that by simply reusing the intent that started the activity. Define an intent starterIntent in your class and assign it in onCreate() using starterIntent = ...
How to get an enum which is created in attrs.xml in code
... answered Sep 24 '13 at 20:58
Andy MellAndy Mell
1,01111 gold badge66 silver badges33 bronze badges
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How to read XML using XPath in Java
...Then you call expr.evaluate() passing in the document defined in that code and the return type you are expecting, and cast the result to the object type of the result.
If you need help with a specific XPath expressions, you should probably ask it as separate questions (unless that was your question...
Can Python print a function definition?
...cts that are imported (not objects defined within the interactive prompt). And of course it will only work if Python can find the source code (so not on built-in objects, C libs, .pyc files, etc)
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