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App Inventor 2 【源码】计算器 .aia 源码，有简单和混合两种模式 - App In...
App Inventor 2 【源码】计算器 .aia 源码，有简单和混合两种模式屏幕1：300+代码块。屏幕2：400+代码块。下载地址。
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App Inventor 2 本地项目编译工具：本地高速编译，无冷却时间限制 · App I...
... 教育 入门必读 中文教程 IoT专题 AI2拓展 ChatGPT接入 Aia Store 开通VIP 搜索 App Inventor 2 本地项目编译工具：本...
undefined reference to `WinMain@16'
... objdump -x a.exe | findstr /i "^subsystem"
Subsystem 00000002 (Windows GUI)
C:\test> _
Hopefully that's OK so far, although the -mwindows flag is just semi-documented.
Building without that semi-documented flag one would have to more specifically tell the linker which su...
Why is it said that “HTTP is a stateless protocol”?
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edited Nov 2 '12 at 17:37
answered Nov 2 '12 at 17:24
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clang error: unknown argument: '-mno-fused-madd' (python package installation failure)
I get the following error when attempting to install psycopg2 via pip on Mavericks 10.9:
14 Answers
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Strange out of memory issue while loading an image to a Bitmap object
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Converting camel case to underscore case in ruby
... underscore
self.gsub(/::/, '/').
gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
gsub(/([a-z\d])([A-Z])/,'\1_\2').
tr("-", "_").
downcase
end
end
Then you can do fun stuff:
"CamelCase".underscore
=> "camel_case"
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How to convert latitude or longitude to meters?
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Here is a javascript function:
function measure(lat1, lon1, lat2, lon2){ // generally used geo measurement function
var R = 6378.137; // Radius of earth in KM
var dLat = lat2 * Math.PI / 180 - lat1 * Math.PI / 180;
var dLon = lon2 * Math.PI / 180 - lon1 * Math.PI / 180;
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Script parameters in Bash
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125
The arguments that you provide to a bashscript will appear in the variables $1 and $2 and $3 wh...
What is the fastest method for selecting descendant elements in jQuery?
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Method 1 and method 2 are identical with the only difference is that method 1 needs to parse the scope passed and translate it to a call to $parent.find(".child").show();.
Method 4 and Method 5 both need to parse the selector and then just cal...