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Does JavaScript guarantee object property order?
...insertion)
As a note, properties order in objects weren’t guaranteed at all before ES2015. Definition of an Object from ECMAScript Third Edition (pdf):
4.3.3 Object
An object is a member of the
type Object. It is an unordered collection of properties each of which
contains a primitive value, obj...
All but last element of Ruby array
...re_ext.rb file with little extensions like this. Some libraries are practically all extensions like this: ActiveSupport for example.
– rfunduk
Oct 22 '09 at 0:30
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How to convert a string to lower case in Bash?
...ous ways:
POSIX standard
tr
$ echo "$a" | tr '[:upper:]' '[:lower:]'
hi all
AWK
$ echo "$a" | awk '{print tolower($0)}'
hi all
Non-POSIX
You may run into portability issues with the following examples:
Bash 4.0
$ echo "${a,,}"
hi all
sed
$ echo "$a" | sed -e 's/\(.*\)/\L\1/'
hi all
# t...
Painless way to install a new version of R?
...han Linux). Does anyone have a good trick for doing the upgrade, from installing the software to copying all the settings/packages over?
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How to get all options of a select using jQuery?
How can I get all the options of a select through jQuery by passing on its ID?
17 Answers
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List all virtualenv
In virtualenvwrapper, is there a simple way to list all virtualenv on my machine?
8 Answers
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Error in Swift class: Property not initialized at super.init call
...error:”
Safety check 1 “A designated initializer must ensure that all of the
“properties introduced by its class are initialized before it
delegates up to a superclass initializer.”
Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks.
https://itunes.apple.co...
Can IntelliJ IDEA encapsulate all of the functionality of WebStorm and PHPStorm through plugins? [cl
...some of Jetbrains' offerings. It looks like IntelliJ IDEA has plugins that allow you to do Node.js and php development.
5 ...
How to select multiple rows filled with constants?
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SELECT 1, 2, 3
UNION ALL SELECT 4, 5, 6
UNION ALL SELECT 7, 8, 9
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How can I get all constants of a type by reflection?
How can I get all constants of any type using reflection?
4 Answers
4
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