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Check if an element is present in an array [duplicate]
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!==-1 [extra chars]
– Francisc
Aug 7 '13 at 12:22
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Remove NA values from a vector
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?max shows you that there is an extra parameter na.rm that you can set to TRUE.
Apart from that, if you really want to remove the NAs, just use something like:
myvec[!is.na(myvec)]
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How to convert linq results to HashSet or HashedSet
... frequently anonymous types come up in LINQ, I think it's worth taking the extra step.
– Jon Skeet
Aug 12 '10 at 21:06
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Database: To delete or not to delete records
...e also have the option to display it to select users as well, without much extra work.
If you're not actively seeking to fully restore the data, but you'd still like to keep it around for monitoring (or similar) purposes. I would suggest that you figure out (to the extent possible of course) an agg...
Vim: insert the same characters across multiple lines
... text on every single line in a range you can easily skip them by pressing extra j's.
Note that for large number of contiguous additions, the block approach or macro will likely be superior.
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The transaction log for the database is full
...og file and made it huge. Once the project is complete we then removed the extra log file.
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【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...应断点阈值设定
（括号后面是样式的缩写）
<576px （Extra small）
>=576px （Small --- sm）
>=769px （Medium --- md）
>=992px （Large --- lg）
>=1200px （X-Large --- xl）
>=1400px （XX-Large ---- xxl）
2、在实际开发中，常用的两种适配方案
a...
What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
...performance problem to a function that was checking for the existence of a string in an array. So I ran some tests.
loaded 90,822 hosts
loading config took 0.087 seconds (array)
loading config took 0.152 seconds (object)
Loading 91k entries into an array (with validate & push) is faster than...
List of lists into numpy array
...eeded ndmin=number-of-list-layers-minus-1 for some reason, else created an extra layer -- need to investigate)
– Venryx
May 19 at 3:50
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Null check in an enhanced for loop
... Note that Collections.emptyList() will avoid allocating an extra object (IIRC).
– Jon Skeet
Feb 12 '10 at 6:31
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