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Get difference between two lists
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In [5]: set([1, 2]) - set([2, 3])
Out[5]: set([1])
where you might em>x m>pect/want it to equal set([1, 3]). If you do want set([1, 3]) as your answer, you'll need to use set([1, 2]).symmetric_difference(set([2, 3])).
shar...
What Makes a Method Thread-safe? What are the rules?
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In the third em>x m>ample private string someValue; is not static so each instance will get a separate copy of that variable. So can you please em>x m>plain how this is not thread safe?
– Bharadwaj
Apr 3 '14 at...
How do I create an empty array in YAML?
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Try using [], like:
empty_array: []
So in Ruby you have:
m>x m> = YAML::load("empty_array: []")
m>x m> # => {"empty_array" => []}
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How to minify php page html output?
...ring gzip depends on your version: Apache 1.3 uses mod_gzip while Apache 2.m>x m> uses mod_deflate.)
Accept-Encoding: gzip, deflate
Content-Encoding: gzip
Use the following snippet to remove white-spaces from the HTML with the help ob_start's buffer:
<?php
function sanitize_output($buffer) {
$...
How do I make UITableViewCell's ImageView a fim>x m>ed size even when the image is smaller
...of images I am using for cell's image views, they are all no bigger than 50m>x m>50. e.g. 40m>x m>50, 50m>x m>32, 20m>x m>37 .....
16 Answer...
Cannot use ref or out parameter in lambda em>x m>pressions
Why can't you use a ref or out parameter in a lambda em>x m>pression?
5 Answers
5
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Difference between a Seq and a List in Scala
I've seen in many em>x m>amples that sometimes a Seq is being used, while other times is the List...
5 Answers
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Can't use method return value in write contem>x m>t
...erence (in order to check whether that reference points to something that em>x m>ists), and PHP before 5.5 didn't support references to temporary values returned from functions.
However, the real problem you have is that you use empty() at all, mistakenly believing that "empty" value is any different fr...
Difference between rake db:migrate db:reset and db:schema:load
...eletes the database
db:schema:load creates tables and columns within the (em>x m>isting) database following schema.rb
db:setup does db:create, db:schema:load, db:seed
db:reset does db:drop, db:setup
db:migrate:reset does db:drop, db:create, db:migrate
Typically, you would use db:migrate after having ma...
Parse JSON in JavaScript? [duplicate]
...rogramming for an ancient browser, such as IE 7 (2006), IE 6 (2001), Firefom>x m> 3 (2008), Safari 3.m>x m> (2009), etc. Alternatively, you may be in an esoteric JavaScript environment that doesn't include the standard APIs. In these cases, use json2.js, the reference implementation of JSON written by Douglas...