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App Inventor 2 数学代码块 · App Inventor 2 中文网

...定随机数种子 (random set seed to) 最小值 (min) 最大值 (max) 平方根 (square root) 绝对值 (abs) 相反数 (neg) 对数 (log) e^ 四舍五入 (round) 上取整 (ceiling) 下取整 (floor) 求模 (modulo) 余数 (remainder) 商 (quotient) 正弦 (sin) 余...
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What does “for” attribute do in HTML tag?

... The <label> tag allows you to click on the label, and it will be treated like clicking on the associated input element. There are two ways to create this association: One way is to wrap the label element around the input element: <label...
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Generate pdf from HTML in div using Javascript

...lement IDs are still done in jQuery style "#id", but it does not mean that all jQuery selectors are supported. Therefore replacing '#ignorePDF' with class selectors like '.ignorePDF' did not work for me. Instead you will have to add the same handler for each and every element, which you want to ig...
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Node.JS constant for platform-specific new line?

... Not sure if this is new in the 0.8.x but there is now a constant http://nodejs.org/api/os.html#os_os_eol var endOfLine = require('os').EOL; share | improve ...
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Script not served by static file handler on IIS7.5

... more often than not you need to run aspnet_regiis.exe -i after installing asp.net. Maybe I would do it anyway now. share | improve this answer | follow ...
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Difference between := and = operators in Go

... @KrupalShah the link to the docs literally says that - "It is shorthand for a regular variable declaration with initializer expressions but no types:" golang.org/ref/spec#Short_variable_declarations – akshaynagpal Jun 16 '...
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How does the HyperLogLog algorithm work?

...ently, and one that I came across which appears to be very interesting is called the HyperLogLog algorithm - which estimates how many unique items are in a list. ...
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Why are static variables considered evil?

...ate world. Recently I've developed an application using Groovy and Java. All through the code I wrote used quite a good number of statics. I was asked by the senior technical lot to cut down on the number of statics used. I've googled about the same, and I find that many programmers are fairly aga...
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How to create an HTML button that acts like a link?

... type="submit">. The only difference is that the <button> element allows children. You'd intuitively expect to be able to use <button href="https://google.com"> analogous with the <a> element, but unfortunately no, this attribute does not exist according to HTML specification. ...
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How to make a window always stay on top in .Net?

...s app that runs a macro in another program. The other program will continually pop up windows and generally make things look, for lack of a better word, crazy. I want to implement a cancel button that will stop the process from running, but I cannot seem to get the window to stay on top. How do I...