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How to check if an array field contains a unique value or another array in MongoDB?
...tag1', 'tag2' ] }}); //2
db.blogpost.find({ 'tags' : { $in : [ 'tag3', 'tag4' ] }}); //3
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What is the difference between children and childNodes in JavaScript?
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4 Answers
4
Active
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Does Qt support virtual pure slots?
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164
Yes, just like regular c++ pure virtual methods. The code generated by MOC does call the pure vi...
Counting Chars in EditText Changed Listener
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142
Use
s.length()
The following was once suggested in one of the answers, but its very ineffici...
Pry: show me the stack
...y the callstack (with show-stack), and so on:
see here:
Frame number: 0/64
From: /Users/johnmair/ruby/rails_projects/personal_site/app/controllers/posts_controller.rb @ line 7 PostsController#index:
5: def index
6: @posts = Post.all
=> 7: binding.pry
8: end
[1] pry(#<Post...
Is it possible to for SQL Output clause to return a column not being inserted?
...ld1 INT, Field2 INT)
INSERT INTO Practice VALUES (1, 1), (2, 2), (3, 3), (4, 4)
MERGE INTO ReportOption r USING Practice p ON 1 = 0
WHEN NOT MATCHED THEN
INSERT (field1, field2)
VALUES (p.Field1, p.Field2)
OUTPUT p.PracticeId, inserted.ReportOptionId, inserted.Field1, inserted.Field2
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Intellij IDEA generate for-each/for keyboard shortcut
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d-lived-live
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Is there a difference between single and double quotes in Java?
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4 Answers
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How to insert tab character when expandtab option is on in Vim
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524
You can use <CTRL-V><Tab> in "insert mode". In insert mode, <CTRL-V> inserts a...