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Why do we need break after case statements?
...hy doesn't the compiler automatically put break statements after each code block in the switch? Is it for historical reasons? When would you want multiple code blocks to execute?
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Use of Initializers vs Constructors in Java
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I most often use static initializer blocks for setting up final static data, especially collections. For example:
public class Deck {
private final static List<String> SUITS;
static {
List<String> list = new ArrayList<String>();
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How to check if a value exists in an array in Ruby
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If you want to check by a block, you could try any? or all?.
%w{ant bear cat}.any? {|word| word.length >= 3} #=> true
%w{ant bear cat}.any? {|word| word.length >= 4} #=> true
[ nil, true, 99 ].any? #=&...
How do you check “if not null” with Eloquent?
...on - ".....\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php"
– Atiqur
Oct 2 '16 at 5:05
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Rails create or update magic?
...y_name("Roger")
user.email = "email@example.com"
user.save
You can use a block, but the block only runs if the record is new.
User.where(name: "Roger").first_or_initialize do |user|
# this won't run if a user with name "Roger" is found
user.save
end
User.find_or_initialize_by(name: "Roger")...
What's the difference between commit() and apply() in SharedPreferences
...say if another commit() happens after you fire apply(), that commit() will block until the apply() is persisted to disk, which makes it clear that this problem does not happen when it comes to 'write' operations, but what about if you are writing and reading immediately after? From my tests, the new...
Beginner's guide to ElasticSearch [closed]
...e a good degree of separation of data that belongs within the same index.
PHP
I use PHP as a front end and used this wrapper to integrate my ELS installation into my scripts.
Other resources
The presentation in the other answer to your question is really good, go through it and learn the DSL Que...
Are NSLayoutConstraints animatable? [duplicate]
I am trying to animate up some views so that they are blocked by the giant keyboard in landscape. It works well if I simply animate the frames, but others have suggested that this is counter-productive and I should be updating the NSLayoutConstraints instead. However, they don't seem to be animata...
Correct way to pause Python program
...know about the sleep function in the time module but what if I have a long block of text I want the user to read?
– RandomPhobia
Jul 19 '12 at 0:34
7
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Escaping ampersand in URL
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there is a php function urlencode which solves this problem : usage $escapedfilename=urlencode($filename);
– Jeremy Young
Feb 19 '19 at 13:28
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