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What does @@variable mean in Ruby?
...alue}" # 2
a = AnotherTest.new
puts "a.value is #{a.value}" # 2
a.value = 3
puts "a.value is #{a.value}" # 3
puts "t.value is #{t.value}" # 3
puts "x.value is #{x.value}" # 3
You can see that @@shared is shared between the classes; setting the value in an instance of one changes the value for all...
SQL: How to get the count of each distinct value in a column?
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318
SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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How can I use if/else in a dictionary comprehension?
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31
Worth mentioning that you don't need to have an if-else condition for both the key and the value. For example, {(a if condition else b): v...
Sublime Text 2 and 3: open the same file multiple times
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30
Go into the pane you want to see the file in.
Type Ctrl-p (Mac: ⌘-p) to get the list of file...
Django REST framework: non-model serializer
...ork will take care of the serialization for you.
You can skip steps 2 and 3 in this case, and just use one class for calculations and one for presentation to the API consumer.
Here are a few snippets may help you out:
Please note that I have not tested this. It's only meant as an example, but it ...
What is the _snowman param in Ruby on Rails 3 forms for?
In Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
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How can I loop through a List and grab each item?
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answered Sep 18 '13 at 3:08
Simon WhiteheadSimon Whitehead
54.9k66 gold badges8383 silver badges119119 bronze badges
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How can I change Eclipse theme?
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edited Oct 14 '19 at 21:23
chrips
3,59244 gold badges2020 silver badges3636 bronze badges
answered Nov ...
How can I filter a Django query with a list of values?
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