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Filter rows which contain a certain string
...good things about Stringr
We should use rather stringr::str_detect() than base::grepl(). This is because there are the following reasons.
The functions provided by the stringr package start with the prefix str_, which makes the code easier to read.
The first argument of the functions of stringr p...
PHP: How to remove all non printable characters in a string?
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7 bit ASCII?
If your Tardis just landed in 1963, and you just want the 7 bit printable ASCII c...
Python loop that also accesses previous and next values
... is used to append a None to its end
There are now 3 independent sequences based on some_iterable that look like:
prevs: None, A, B, C, D, E
items: A, B, C, D, E
nexts: B, C, D, E, None
finally izip is used to change 3 sequences into one sequence of triplets.
Note that izip stop...
Catch an exception thrown by an async void method
...rchRob Church
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Reuse a parameter in String.format?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Change MySQL default character set to UTF-8 in my.cnf?
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Is your first line max_allowed_packet=64M related to this UTF8 issue in any way?
– malhal
Nov 29 '12 at 3:40
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What are the undocumented features and limitations of the Windows FINDSTR command?
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Preface
Much of the information in this answer has been gathered based on experiments run on a Vista machine. Unless explicitly stated otherwise, I have not confirmed whether the information applies to other Windows versions.
FINDSTR output
The documentation never bothers to explain the ou...
How are 3D games so efficient? [closed]
...ail as much as you can -- low/medium/high versions of 3D models and switch based on distance from camera player - no point rendering a high-res version if it's only 5 pixels on screen.
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Should IBOutlets be strong or weak under ARC?
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PS: weak is a quite a bit cheaper in ARM64 :D
– hypercrypt
Dec 10 '13 at 22:11
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Using .NET, how can you find the mime type of a file based on the file signature not the extension
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This is based on the filename however. It could be useful for someone, just not the OP, who wanted it done by file contents.
– mandreko
Aug 23 '11 at 18:09
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