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Replace specific characters within strings
...pression and the function gsub():
group <- c("12357e", "12575e", "197e18", "e18947")
group
[1] "12357e" "12575e" "197e18" "e18947"
gsub("e", "", group)
[1] "12357" "12575" "19718" "18947"
What gsub does here is to replace each occurrence of "e" with an empty string "".
See ?regexp or gsub ...
Difference between size_t and std::size_t
...f the sizeof operator
And C++ Standard says (about cstddef header) in §18.1/3,
The contents are the same as the Standard C library header , with the following changes.
So yeah, both are same; the only difference is that C++ defines size_t in std namespace.
Please also notice that the abov...
WITH CHECK ADD CONSTRAINT followed by CHECK CONSTRAINT vs. ADD CONSTRAINT
I'm looking at the AdventureWorks sample database for SQL Server 2008, and I see in their creation scripts that they tend to use the following:
...
How to use greater than operator with date?
...ick instead
SELECT * FROM `la_schedule` WHERE `start_date` > '2012-11-18';
SQLFiddle Demo
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Where's the difference between setObject:forKey: and setValue:forKey: in NSMutableDictionary?
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answered Aug 8 '09 at 19:09
Oren TrutnerOren Trutner
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Superiority of unnamed namespace over static?
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edited Jun 8 at 9:51
RobertS supports Monica Cellio
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How do you make lettered lists using markdown?
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It doesn't appear that standard Markdown has this capability. You can:
Use CSS, by putting thi...
Transitions with GStreamer Editing Services freezes, but works OK without transitions
...ps://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997...
Java “params” in method signature?
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user3145373 ツ
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answered Feb 6 '09 at 10:07
Stefano DriussiStefa...
MySQL Select all columns from one table and some from another table
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answered Aug 16 '10 at 12:08
SimonSimon
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