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How do I fetch lines before/after the grep result in bash?
... use the -B and -A to print lines before and after the match.
grep -i -B 10 'error' data
Will print the 10 lines before the match, including the matching line itself.
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Why is creating a Thread said to be expensive?
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150
Java thread creation is expensive because there is a fair bit of work involved:
A large block ...
How do you concatenate Lists in C#?
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309
Concat returns a new sequence without modifying the original list. Try myList1.AddRange(myList2...
#ifdef in C#
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answered Jun 10 '09 at 12:50
heavydheavyd
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Why use double indirection? or Why use pointers to pointers?
...gt;
#include <string.h>
int wordsinsentence(char **x) {
int w = 0;
while (*x) {
w += 1;
x++;
}
return w;
}
int wordsinmono(char ***x) {
int w = 0;
while (*x) {
w += wordsinsentence(*x);
x++;
}
return w;
}
int wordsinbio(char **...
How do I pass the this context to a function?
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305
Javascripts .call() and .apply() methods allow you to set the context for a function.
var myfu...
Java: What is the difference between and ?
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ThiloThilo
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5
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How to pass html string to webview on android
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answered Dec 6 '12 at 10:17
Panchal AmitPanchal Amit
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Checking if output of a command contains a certain string in a shell script
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105
Test the return value of grep:
./somecommand | grep 'string' &> /dev/null
if [ $? == 0 ...
git working on two branches simultaneously
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Git 2.5+ (Q2 2015) supports this feature!
If you have a git repo cool-app, cd to root (cd cool-app), run git worktree add ../cool-app-feature-A feature/A. This checks out the branch feature/A in it's own new dedicated directory, cool-app-...