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Add timestamps to an existing table
..._table block. You can add these columns by specifying the column types manually:
class AddTimestampsToUser < ActiveRecord::Migration
def change_table
add_column :users, :created_at, :datetime, null: false
add_column :users, :updated_at, :datetime, null: false
end
end
While this do...
How to set delay in android?
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This solution explained all the questions that I had with handlers at some lines of code.
– Sierisimo
May 19 '15 at 17:55
47
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What GUI libraries are the JetBrains using?
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IntelliJ IDEA is a pure Java Swing application. All the custom components like editor tabs are created manually, no third-party libraries are used for this. You can find all the details by looking at the IntelliJ IDEA Community Source code.
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Using Mockito to mock classes with generic parameters
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@demaniak It doesn't work at all. Argument matchers can't be used in that context.
– Krzysztof Krasoń
May 19 '18 at 20:53
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How to remove a file from the index in git?
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This also works great if e.g. you accidentally checked in some build intermediates or local configuration files that didn't make it into your .gitignore; use git rm --cached to remove them from the repo, add the relevant files or directories to .gitignore, stage and ...
How do you get a directory listing sorted by creation date in python?
What is the best way to get a list of all files in a directory, sorted by date [created | modified], using python, on a windows machine?
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.NET - How can you split a “caps” delimited string into an array?
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CamelCase! That's what it was called! I love it! Thanks much!
– Matias Nino
Sep 30 '08 at 23:27
19
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Entity framework self referencing loop detected [duplicate]
...en this is sufficient, and I'd say better if you're doing MVVM, because it allows you to specify the ViewModel on the server. if you want to use this service as part of an N-Tier API, consumed by other .net services, then the other answer is more appropriate, because it keeps the database contract i...
How are the points in CSS specificity calculated
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Pekka's answer is practically correct, and probably the best way to think about the issue.
However, as many have already pointed out, the W3C CSS recommendation states that "Concatenating the three numbers a-b-c (in a number system with a large base...
Why are nested weights bad for performance? Alternatives?
...with non-zero weights, then the number of measurements
increase exponentially.
It's better to use RelativeLayouts and adjust your view according to the places of other views without using specific dpi values.
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