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Fastest way to tell if two files have the same contents in Unix/Linux?
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410
I believe cmp will stop at the first byte difference:
cmp --silent $old $new || echo "files are...
Input placeholders for Internet Explorer
...Length="6" type="text" placeholder="Hi Mom">
<label style="font: 0.75em/normal sans-serif; left: 5px; top: 3px; width: 147px; height: 15px; color: rgb(186, 186, 186); position: absolute; overflow-x: hidden; font-size-adjust: none; font-stretch: normal;" for="placeholder1314588474481">Hi...
In mocha testing while calling asynchronous function how to avoid the timeout Error: timeout of 2000
...nous functions using mocha, I'm getting timeout error ( Error: timeout of 2000ms exceeded. ). How can I resolve this?
7 Ans...
count the frequency that a value occurs in a dataframe column
...['freq'] = df.groupby('a')['a'].transform('count')
df
Out[41]:
a freq
0 a 2
1 b 3
2 s 2
3 s 2
4 b 3
5 a 2
6 b 3
[7 rows x 2 columns]
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Listing all permutations of a string/integer
...more elaborate (and since it is tagged c #), from http://radio.weblogs.com/0111551/stories/2002/10/14/permutations.html :
Rather lengthy, but I decided to copy it anyway, so the post is not dependent on the original.
The function takes a string of characters, and writes down every possible permutat...
For every character in string
...fashioned for-loop:
std::string str = ???;
for(std::string::size_type i = 0; i < str.size(); ++i) {
do_things_with(str[i]);
}
Looping through the characters of a null-terminated character array:
char* str = ???;
for(char* it = str; *it; ++it) {
do_things_with(*it);
}
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Add a prefix string to beginning of each line
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PhysicalChemist
50444 silver badges1313 bronze badges
answered Jan 20 '10 at 6:38
Alok SinghalAlok Singhal
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How to filter multiple values (OR operation) in angularJS
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20 Answers
20
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How to remove text from a string?
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edited Feb 28 at 9:20
Community♦
111 silver badge
answered May 1 '12 at 14:14
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SSH to Vagrant box in Windows?
...igured in Connection > SSH > Auth > Private key file
use host 127.0.0.1
use port 2222 instead of 22
you can set the default username (vagrant) under Connection > SSH > Auth > Private key for authentication
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