大约有 300 项符合查询结果（耗时：0.0310秒） [XML]
Extracting numbers from vectors of strings
...gexpr puts it between Andrew's and Arun's solutions (second fastest) on a 1e6 set. Perhaps also interesting, using sub in Andrew's solution does not improve the speed.
– Matthew Lundberg
Jan 27 '13 at 16:42
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How to correct TypeError: Unicode-objects must be encoded before hashing?
...dbits(256)).encode('utf-8')).hexdigest()
'cd183a211ed2434eac4f31b317c573c50e6c24e3a28b82ddcb0bf8bedf387a9f'
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Efficiently replace all accented characters in a string?
...base':'G', 'letters':/[\u0047\u24BC\uFF27\u01F4\u011C\u1E20\u011E\u0120\u01E6\u0122\u01E4\u0193\uA7A0\uA77D\uA77E]/g},
{'base':'H', 'letters':/[\u0048\u24BD\uFF28\u0124\u1E22\u1E26\u021E\u1E24\u1E28\u1E2A\u0126\u2C67\u2C75\uA78D]/g},
{'base':'I', 'letters':/[\u0049\u24BE\uFF29\u00CC\u00CD\u0...
jQuery vs document.querySelectorAll
...tpRequest: Jquery 89% slower
Height: $.outerHeight vs offsetHeight: Jquery 87% slower
Attr: $.attr vs setAttribute: Jquery 86% slower
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How to make a great R reproducible example
...thing on larger objects, you can try
my.df2 <- data.frame(a = sample(10e6), b = sample(letters, 10e6, replace = TRUE))
If you're working with spatial data via the raster package, you can generate some random data. A lot of examples can be found in the package vignette, but here's a small nugge...
Convert PDF to image with high resolution
...e left has a file size of 337.879 Bytes (330 kByte).
Its resolution is 758x996 pixels, using 8-bit Gray color space.
So, no need to resize; add the -density flag. The density value 150 is weird -- trying a range of values results in a worse looking image in both directions!
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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
繁体中文原文：https://blog.cavedu.com/2017/02/ ... %e6%8e%a7%e5%88%b6/
本文將介紹如何取得觸碰點的 RGB 參數之後透過 BLE 送給 Arduino 101 來點亮 RGB LED。
App InventorDesigner使用 Canvas 來取得觸碰點座標。兩個連線斷線用的按鈕：Btn_Connect /&n...
What is the JavaScript convention for no operation?
...ransform if you must):
()=>{} vs. Function.Prototype
()=>{} is 87% faster than Function.prototype in Chrome 67.
()=>{} is 25% faster than Function.prototype in Firefox 60.
()=>{} is 85% faster than Function.prototype in Edge (6/15/2018).
()=>{} is 65% less code than Function.pro...
How to get the source directory of a Bash script from within the script itself?
... community wiki
6 revs, 5 users 87%phatblat
14
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How do I use Assert to verify that an exception has been thrown?
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996
For "Visual Studio Team Test" it appears you apply the ExpectedException attribute to the test...