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Checking if a variable is not nil and not zero in ruby
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You could do this:
if (!discount.nil? && !discount.zero?)
The order is important here, because if discount is nil, then it will not have a zero? method. Ruby's short-circuit evaluation should prevent it from trying to evaluate discount.zero?, however, if discount is nil.
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jQuery get textarea text
... in FPS games, etc.), and then have it Ajax itself back to the server in-order to do stuff.
9 Answers
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Conditional Replace Pandas
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Android, How to limit width of TextView (and add three dots at the end of text)?
...t the three dots).
android:maxLines="1"
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:maxLines="1"
android:text="one two three four five six seven eight nine ten" />
This just forces the text to one line. Any extra text is hidd...
Why is x86 ugly? Why is it considered inferior when compared to others? [closed]
... These interdependencies make it difficult to do things like instruction reordering on the chip, because the artifacts and semantics of those interdependencies must be preserved for each instruction.
For example, most x86 integer add & subtract instructions modify the flags register. After pe...
Where does R store packages?
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Failed to build gem native extension (installing Compass)
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In order to install compass On Mac OS X 10.10 (Yosemite)had to perform the following:
1. Set Up Ruby Environment
Ensure ruby is installed and up to date: ruby -v
Update gem's sudo gem update --system
2. Set Up MAC Environme...
Do I need Content-Type: application/octet-stream for file download?
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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...s Either the extension methods changed over time or you forgot the builder _ .Entity<TEntity>() _ before HasOne() can be called...
– ViRuSTriNiTy
May 18 at 13:51
1
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Can an interface extend multiple interfaces in Java?
...nterface B with boolean test()? (Is this a cousin of the diamond problem?) __Tried it and the sensible thing happens: not allowed if the return type is different.
– Daniel
Jan 6 '15 at 17:38
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