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iOS 7 - How to display a date picker in place in a table view?
In WWDC 2013 video, Apple suggests displaying picker in place in a table view in iOS 7. How to insert and animate a view between table view cells?
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Git: Remove committed file after push
...t, no force needed:
git push
get back to your unfinished work, again do (3 times arrow up):
git checkout HEAD^ -- /path/to/file
effectively 'uncommitting':
To modify the last commit of the repository HEAD, obfuscating your accidentally pushed work, while potentially running into a conflict wi...
How to ignore xargs commands if stdin input is empty?
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322
For GNU xargs, you can use the -r or --no-run-if-empty option:
--no-run-if-empty
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How do I join two lines in vi?
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311
Shift+J removes the line change character from the current line, so by pressing "J" at any pla...
How to do parallel programming in Python?
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answered Dec 12 '13 at 16:39
Matt WilliamsonMatt Williamson
32.1k1010 gold badges5757 silver badges6969 bronze badges
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How do I replace the *first instance* of a string in .NET?
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135
string ReplaceFirst(string text, string search, string replace)
{
int pos = text.IndexOf(sear...
kill -3 to get java thread dump
I am using kill -3 command to see the JVM's thread dump in unix. But where can I find the output of this kill command? I am lost!!
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How to find the files that are created in the last hour in unix
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edited Nov 16 '16 at 4:38
seanf
5,62822 gold badges3939 silver badges4949 bronze badges
answered Jul ...
Assign multiple columns using := in data.table, by group
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This now works in v1.8.3 on R-Forge. Thanks for highlighting it!
x <- data.table(a = 1:3, b = 1:6)
f <- function(x) {list("hi", "hello")}
x[ , c("col1", "col2") := f(), by = a][]
# a b col1 col2
# 1: 1 1 hi hello
# 2: 2 2 hi hello
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How to find out client ID of component for ajax update/render? Cannot find component with expression
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313
Look in HTML output for actual client ID
You need to look in the generated HTML output to fin...