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How can I get the list of a columns in a table for a SQLite database?
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What you're looking for is called the data dictionary. In sqlite a list of all tables can be found by querying sqlite_master table (or view?)
sqlite> create table people (first_name varchar, last_name varchar, email_address varchar);
sqlite> sel...
History or log of commands executed in Git
...y I can keep track of commands I used in Git under Windows? I want to view all the commands that I have applied on my repository.
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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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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...
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...
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...
Creating runnable JAR with Gradle
Until now I created runnable JAR files via the Eclipse "Export..." functionallity but now I switched to IntelliJ IDEA and Gradle for build automation.
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How can I match multiple occurrences with a regex in JavaScript similar to PHP's preg_match_all()?
... comment: rather than using regex, we now have URLSearchParams, which does all of this for us, so no custom code, let alone regex, are necessary anymore.
– Mike 'Pomax' Kamermans
Browser support is listed here https://caniuse.com/#feat=urlsearchparams
I would suggest an alternative reg...
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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