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When to wrap quotes around a shell variable?
..., "${arr[idx]}", "${string:start:length}"
inside [[ ]] expression which is free from word splitting and globbing issues (this is a matter of style and opinions can vary widely)
where we want word splitting (for word in $words)
where we want globbing (for txtfile in *.txt; do ...)
where we want ~ to ...
Get name of caller function in PHP?
...ight need to install php5-dev first
sudo aptitude install php5-dev
more info
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How to get UTC timestamp in Ruby?
...t is one way of representing a point in time, but it also needs additional information to even know that you're dealing with a time and not a number. A Time object solves this problem nicely by representing a point in time and also being explicit about what it is.
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NumPy: function for simultaneous max() and min()
...d. (Note that this is all implemented in C, so the loops are more or less free anyway).
EDIT Sorry to the 4 of you who upvoted and had faith in me. You definitely can optimize this.
Here's some fortran code which can be compiled into a python module via f2py (maybe a Cython guru can come along...
Why are we not to throw these exceptions?
...at may cause an exception which exactly matches an existing one, then feel free to use that, especially if you are trying to match some built-in behavior. Just make sure you choose a very specific exception type then.
In general though, unless you find a (specific) exception that fills your need, y...
How can I pass command-line arguments to a Perl program?
...
Not sure how this is new info, but I decided against a downvote, since you're new.
– Joel Berger
Apr 3 '12 at 4:31
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Accessing @attribute from SimpleXML
...an XML node. You can then var_dump the return value of the function.
More info at php.net
http://php.net/simplexmlelement.attributes
Example code from that page:
$xml = simplexml_load_string($string);
foreach($xml->foo[0]->attributes() as $a => $b) {
echo $a,'="',$b,"\"\n";
}
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What are the “standard unambiguous date” formats for string-to-date conversion in R?
...ed Format:
date <- as.Date(sdate4, format = "%Y.%m.%d") # ==> Error Free Date Conversion.
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text-overflow: ellipsis not working
...It uses -webkit-* properties, but is supported in all major browsers. More info can be found here: css-tricks.com/almanac/properties/l/line-clamp
– dkniffin
Apr 14 at 19:38
ad...
Rails 4 LIKE query - ActiveRecord adds quotes
...%"], order => 'name'
end
See the docs on AREL conditions for more info.
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