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Javascript how to split newline
I'm using jquery, and I have a textarea. When I submit by my button I will alert each text separated by newline.
How to split my text when there is a newline?
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Regex doesn't work in String.matches()
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What do you mean by other languages followed suit? From what I know, only C++ has an equivalent set of methods - regex_search and regex_match. In Python, re.match only anchors the match at the start of the string (as if it were \Apattern) and...
how does multiplication differ for NumPy Matrix vs Array classes?
...red to a "normal" numpy array. If all you're doing is linear algebra, then by all means, feel free to use the matrix class... Personally I find it more trouble than it's worth, though.
For arrays (prior to Python 3.5), use dot instead of matrixmultiply.
E.g.
import numpy as np
x = np.arange(9).re...
Where can I learn how to write C code to speed up slow R functions? [closed]
...ardly ever need it. And while this cost is undeniable, it is far eclipsed by the benefit of simpler code, less boilerplate, no PROTECT/UNPROTECT, no memory management etc pp. Doug Bates just yesterday stated that he finds C++ and Rcpp to be much more like writing R than writing C++. YMMV and all ...
Pass parameters in setInterval function
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By far the best answer. Lean and clean. Thanks a lot!
– Tobi
Sep 2 '14 at 10:01
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MongoDB: How to update multiple documents with a single command?
... in the development releases (1.1.3). From the shell you do a multi update by passing true as the fourth argument to update(), where the the third argument is the upsert argument:
db.test.update({foo: "bar"}, {$set: {test: "success!"}}, false, true);
For versions of mongodb 2.2+ you need to set o...
Set selected radio from radio group with a value
... the val method instead of a raw value
Note: If you simply pass the value by itself (without being inside an array), that will result in all values of "mygroup" being set to the value.
$("input[name=mygroup]").val([5]);
Here is the jQuery doc that explains how it works: http://api.jquery.com/val...
extract part of a string using bash/cut/split
...mat as file-name matching, so * (any characters) is common, often followed by a particular symbol like / or .
Examples:
Given a variable like
MYVAR="users/joebloggs/domain.com"
Remove the path leaving file name (all characters up to a slash):
echo ${MYVAR##*/}
domain.com
Remove the file na...
How to override to_json in Rails?
... of as_json. As you can see in the ActiveRecord::Serialization docs (api.rubyonrails.org/classes/ActiveRecord/…), there is very little (no) documentation for this. I will give this a try :)
– maček
Apr 4 '10 at 17:53
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JSON encode MySQL results
...RobertPitt, security based on concealing names of your columns is security by obscurity!
– TMS
Dec 2 '11 at 21:10
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