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In Python, how do I determine if an object is iterable?

...nswered Apr 10 at 11:24 Pekka KlärckPekka Klärck 1,99311 gold badge1616 silver badges1919 bronze badges ...
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使用虚拟现实和App Inventor进行实验 · App Inventor 2 中文网

...pp Inventor 不包含复制文件的操作。幸运的是,由于 Taifun Bär(谢谢 Taifun!),有一个 App Inventor 扩展,它提供了一个带有 TaifunFile.copy 操作的组件 TaifunFile。可以从此处下载扩展。您应该在构建 Expeditions 和 Virtuality 演示之前安装...
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Why is Node.js single threaded? [closed]

...In my opinion that theory's been borne out. A node.js app that isn't doing CPU intensive stuff can run thousands more concurrent connections than Apache or IIS or other thread-based servers. The single threaded, async nature does make things complicated. But do you honestly think it's more complica...
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Turn off Chrome/Safari spell checking by HTML/css

...nswered Dec 9 '14 at 8:09 Timo KähkönenTimo Kähkönen 10.5k88 gold badges6161 silver badges101101 bronze badges ...
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Is volatile expensive?

...n the page I see that LoadLoad and LoadStore are effectively no-ops on X86 CPUs. Does this mean that volatile read operations can be done without a explicit cache invalidation on x86, and is as fast as a normal variable read (disregarding the reordering constraints of volatile)? ...
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What does Python's eval() do?

... I have 8 cores so I would want a list [1, 8]. >>>from os import cpu_count >>>eval('[1, cpu_count()]') [1, 8] Likewise all of __builtins__ is available. >>>eval('abs(-1)') 1 Ok. So there we see one function we want exposed and an example of one (of many that can be m...
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Conditional import of modules in Python

...er) version of the standard json module. – Seppo Erviälä Oct 20 '12 at 17:07 ...
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How to show current year in view?

...ed May 30 '11 at 10:39 Emil AhlbäckEmil Ahlbäck 5,67266 gold badges3333 silver badges5252 bronze badges ...
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Difference between global and device functions

... __global__ - Runs on the GPU, called from the CPU or the GPU*. Executed with <<<dim3>>> arguments. __device__ - Runs on the GPU, called from the GPU. Can be used with variabiles too. __host__ - Runs on the CPU, called from the CPU. *) __global__ funct...
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Convert a string to int using sql query

...red Sep 27 '18 at 10:35 Örjan JämteÖrjan Jämte 12.2k11 gold badge1919 silver badges2121 bronze badges ...