大约有 250 项符合查询结果（耗时：0.0224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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What is your single most favorite command-line trick using Bash? [closed]
... community wiki
3 revs, 3 users 92%seth
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What is your favorite C programming trick? [closed]
... community wiki
2 revs, 2 users 92%Andrew Barrett
4
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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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Favorite (Clever) Defensive Programming Best Practices [closed]
... community wiki
2 revs, 2 users 92%Kyralessa
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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...
How can I build XML in C#?
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4 revs, 4 users 92%user65199
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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...
Checking if a key exists in a JavaScript object?
...t = "Impression" in array;
The result was
12,931,832 ±0.21% ops/sec 92% slower
Using hasOwnProperty
var result = array.hasOwnProperty("Impression")
The result was
16,021,758 ±0.45% ops/sec 91% slower
Accessing elements directly (brackets style)
var result = array["Impression"] === un...
What is the most frequent concurrency issue you've encountered in Java? [closed]
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2 revs, 2 users 92%Jared
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