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How to extract URL parameters from a URL with Ruby or Rails?
...to turn any given URL string into a HASH?
You can try http://www.ruby-doc.org/stdlib/libdoc/cgi/rdoc/classes/CGI.html#M000075
require 'cgi'
CGI::parse('param1=value1&param2=value2&param3=value3')
returns
{"param1"=>["value1"], "param2"=>["value2"], "param3"=>["value3"]}
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How to avoid 'cannot read property of undefined' errors?
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Update:
If you use JavaScript according to ECMAScript 2020 or later, see optional chaining.
TypeScript has added support for optional chaining in version 3.7.
// use it like this
obj?.a?.lot?.of?.properties
Solution for JavaScript before ECMASCript 202...
The maximum value for an int type in Go
How does one specify the maximum value representable for an unsigned integer type?
10 Answers
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How do I get the number of days between two dates in JavaScript?
How do I get the number of days between two dates in JavaScript? For example, given two dates in input boxes:
37 Answers
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How do I fix "The expression of type List needs unchecked conversion…'?
...>, then cast each element of the sf.getEntries() result to SyndEntry before adding it to your new list. Collections.checkedList does not do this checking for you—although it would have been possible to implement it to do so.
By doing your own cast up front, you're "complying with the warranty...
Return a value from AsyncTask in Android [duplicate]
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It not work, e.g. myTask mTask = new myTask(); mTask.execute(); will not return the myHandledValueType.
– Cheung
Aug 30 '13 at 5:19
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Which version of CodeIgniter am I currently using?
.../codeigniter/CodeIgniter.php As of CodeIgniter 2, it's defined in /system/core/CodeIgniter.php
For example,
echo CI_VERSION; // echoes something like 1.7.1
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How can I delete a newline if it is the last character in a file?
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perl -pe 'chomp if eof' filename >filename2
or, to edit the file in place:
perl -pi -e 'chomp if eof' filename
[Editor's note: -pi -e was originally -pie, but, as noted by several commenters and explained by @hvd, the latter doesn't work.]
This was described as a '...
@ variables in Ruby on Rails
...names. Also, how do I decide which kind of variable I should use? With @ or not?
7 Answers
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Node.js or Erlang
...lang a try. Even though it will be a steeper learning curve, you will get more out of it since you will be learning a functional programming language. Also, since Erlang is specifically designed to create reliable, highly concurrent systems, you will learn plenty about creating highly scalable servi...