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How to convert a selection to lowercase or uppercase in Sublime Text
...or lowercase.
Method 1 (Two keys pressed at a time)
Press Ctrl and hold.
Now press K, release K while holding Ctrl. (Do not release the Ctrl key)
Immediately, press U (for uppercase) OR L (for lowercase) with Ctrl still being pressed, then release all pressed keys.
Method 2 (3 keys pressed at a t...
How to check task status in Celery?
...o True, then the state will be STARTED.
The state PENDING means "I don't know."
An AsyncResult with the state PENDING does not mean anything more than that Celery does not know the status of the task. This could be because of any number of reasons.
For one thing, AsyncResult can be constructed wi...
Associative arrays in Shell scripts
...ys that are built in to the shell. This should work in bash 4.0 (available now on most major distros, though not on OS X unless you install it yourself), ksh, and zsh:
declare -A newmap
newmap[name]="Irfan Zulfiqar"
newmap[designation]=SSE
newmap[company]="My Own Company"
echo ${newmap[company]}
e...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...he future requirements and they made EJB 1.0 and then 2.0 and then 3.0 and now 3.1 but EJB's target was for just some requirements (transaction, distributed component model, etc).
At the same time (in parallel) they realized that they need to support JSF too, then they made JSF managed beans and an...
How to use hex color values
...
countelements is now just count :)
– Hlung
Apr 6 '15 at 16:24
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create multiple tag docker image
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Since 1.10 release, you can now add multiple tags at once on build:
docker build -t name1:tag1 -t name1:tag2 -t name2 .
Source: Add ability to add multiple tags with docker build
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How to filter Pandas dataframe using 'in' and 'not in' like in SQL
...d, but that something is done badly before does not justify doing it badly now.
– ifly6
May 18 '18 at 22:20
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What is Express.js?
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Express.js is a Node.js framework. It's the most popular framework as of now (the most starred on NPM).
.
It's built around configuration and granular simplicity of Connect middleware. Some people compare Express.js to Ruby Sinatra vs. the bulky and opinionated Ruby on Rails.
2) What is the...
Mipmap drawables for icons
Since Android 4.3 (Jelly Bean) we can now make use of the res/mipmap folders to store "mipmap" images.
11 Answers
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smart pointers (boost) explained
...> q(p); // not legal!
unique_ptr<type> r(move(p)); // legal. p is now empty, but r owns the object
unique_ptr<type> s(function_returning_a_unique_ptr()); // legal!
This is the semantic that std::auto_ptr obeys, but because of missing native support for moving, it fails to provide th...