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Differences between C++ string == and compare()?
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21.4.8.2 operator==
template<class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT,traits,Allocator>& rhs) noexcept;
Returns: lhs.compare(rhs) == 0.
Seems like ther...
Function in JavaScript that can be called only once
... overwriting the reference in the current scope.
– a cat
Mar 28 '16 at 7:43
1
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Bash continuation lines
... two arguments to echo and you only want one, then let's look at string concatenation. In bash, placing two strings next to each other concatenate:
$ echo "continuation""lines"
continuationlines
So a continuation line without an indent is one way to break up a string:
$ echo "continuation"\
>...
git: diff between file in local repo and origin
...ike this (you are in the local folder):
#!/bin/bash
git fetch
var_local=`cat .git/refs/heads/master`
var_remote=`git log origin/master -1 | head -n1 | cut -d" " -f2`
if [ "$var_remote" = "$var_local" ]; then
echo "Strings are equal." #1
else
echo "Strings are not equal." #0 if you want
fi...
Fastest way to convert string to integer in PHP
...t would become 0. (Yes, I'm aware this old!)
– Super Cat
Aug 22 '15 at 0:38
add a comment
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Can an html element have multiple ids?
... through space separated or any character separation. Though in the specification it says that for backward compatibility it must not contain space character in attributes values Fragment Identifiers(w3.org/TR/xhtml1/#guidelines) So if you want to express multivalued IDs you have to express it diffe...
What is the most elegant way to remove a path from the $PATH variable in Bash?
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My dirty hack:
echo ${PATH} > t1
vi t1
export PATH=$(cat t1)
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Grep and Sed Equivalent for XML Command Line Processing
...arsing HTML/XML DOMs in ruby using XPath & CSS selectors
hpricot: deprecated
fxgrep:
Uses its own XPath-like syntax to query documents. Written in SML, so
installation may be difficult.
LT XML:
XML toolkit derived from SGML tools, including sggrep, sgsort,
xmlnorm and others. Uses its own quer...
How do I determine k when using k-means clustering?
...t Bischof, Ales Leonardis, and Alexander Selb in Pattern Analysis and Applications vol. 2, p. 59-72, 1999.
Finally, you can start with one cluster, then keep splitting clusters until the points assigned to each cluster have a Gaussian distribution. In "Learning the k in k-means" (NIPS 2003), Greg ...
Best way to use multiple SSH private keys on one client
...uct ssh to try multiple keys in succession when connecting. Here's how:
$ cat ~/.ssh/config
IdentityFile ~/.ssh/id_rsa
IdentityFile ~/.ssh/id_rsa_old
IdentityFile ~/.ssh/id_ed25519
# ... and so on
$ ssh server.example.com -v
....
debug1: Next authentication method: publickey
debug1: Trying private...