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Inserting string at position x of another string
...e it on any string object:
var my_string = "abcd";
my_string.insertAt(1, "XX");
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How to change UIPickerView height
...ite radical to get the effect of a smaller picker which works in both OS 3.xx and OS 4.0. I left the picker to be whatever size the SDK decides it should be and instead made a cut-through transparent window on my background image through which the picker becomes visible. Then simply placed the picke...
what’s the difference between Expires and Cache-Control headers?
... prevents request-peaks to your origin-server: With "Expires Wed, 30 Oct 20xx 04:37:07 GMT" all browsers will request you at the same time.
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Is there “0b” or something similar to represent a binary number in Javascript
.../ bin will be set to 15
var oct = 0o17; // oct will be set to 15
var oxx = 017; // oxx will be set to 15
var hex = 0xF; // hex will be set to 15
// note: bB oO xX are all valid
This feature is already available in Firefox and Chrome. It's not currently supported in IE, but apparen...
How do I install Python packages on Windows?
...ons, pip is located as C:\Users\[you]\AppData\Local\Programs\Python\Python[XX]\Scripts\pip
– J P
Jun 9 '16 at 9:30
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Import Error: No module named numpy
...the "cd" (change directory) command. e.g. "cd C:\Program Files (x86)\PythonXX\Scripts"
This might be: C:\Users\\AppData\Local\Programs\Python\PythonXX\Scripts or C:\Program Files (x86)\PythonXX\Scripts (where XX represents the Python version number), depending on where it was installed. It may be ...
Only initializers, entity members, and entity navigation properties are supported
... Thank you for this simple and concise example of Expression<Func<xx,yy>>. I ever understood it before, but it looks like obvious now.
– AlexB
Dec 23 '16 at 11:02
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【AI2+AI】人工智能舞姿识别App - 创客硬件开发 - 清泛IT社区，为创新赋能！
...oseNet的状态传达为“就绪”，或者在出现错误时显示错误消息。每次点击ResetButton时，重置Dance Score为零。swapcamera按钮将相机视图从默认的“前置”视图切换到“后置”视图，反之亦然。CanvasLiveButton调整一个布尔变量的值，该变...
How to extract a floating number from a string [duplicate]
... %g [-+]?(\d+(\.\d*)?|\.\d+)([eE][-+]?\d+)?
%i [-+]?(0[xX][\dA-Fa-f]+|0[0-7]*|\d+)
This regular expression does not support international formats where a comma is used as the separator character between the whole and fractional part (3,14159).
In that case, replace all \. with ...
Set icon for Android application
...drawable-xhdpi (320 dpi, Extra-high density screen) - 96px x 96px
drawable-xxhdpi (480 dpi, Extra-extra-high density screen) - 144px x 144px
drawable-xxxhdpi (640 dpi, Extra-extra-extra-high density screen) - 192px x 192px
You may then define the icon in your AndroidManifest.xml file as such:
<...