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list every font a user's browser can display
...t ahead of time or send it down from the server. (Intuitively, it seems like the browser should know what fonts it has and this should be exposed to javascript somehow.)
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Is it expensive to use try-catch blocks even if an exception is never thrown?
We know that it is expensive to catch exceptions. But, is it also expensive to use a try-catch block in Java even if an exception is never thrown?
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Automatic counter in Ruby for each?
...nt to "each" (for example, if you want to map with an index or something like that) you can concatenate enumerators with the each_with_index method, or simply use with_index:
blahs.each_with_index.map { |blah, index| something(blah, index)}
blahs.map.with_index { |blah, index| something(blah, inde...
Measuring function execution time in R
...ime <- Sys.time()
...Relevent codes...
end.time <- Sys.time()
time.taken <- end.time - start.time
time.taken
Not the most elegant way to do it, compared to the answere above , but definitely a way to do it.
share
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PowerShell equivalent to grep -f
I'm looking for the PowerShell equivalent to grep --file=filename . If you don't know grep , filename is a text file where each line has a regular expression pattern you want to match.
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Find the similarity metric between two strings
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Inbar RoseInbar Rose
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Redis 的性能幻想与残酷现实 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...里有个底。
测试前提
Redis version 2.4.2
Using the TCP loopback
Payload size = 256 bytes
测试结果
SET: 198412.69/s
GET: 198019.80/s
这个数据刚一看觉得有点超出预期了，不过看了测试前提是规避了网络开销的，Client 和 Server 全在本机。而真...
NumPy: function for simultaneous max() and min()
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Stuart BergStuart Berg
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add a c...
SQLite: How do I save the result of a query as a CSV file?
...an find out how to do this in w/ the Node library?
– kuanb
Nov 12 '15 at 21:31
2
Use sqlite> ....
In a javascript array, how do I get the last 5 elements, excluding the first element?
...answered Jun 24 '11 at 21:18
SLaksSLaks
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