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Rails: Why does find(id) raise an exception in rails? [duplicate]
...ctiveRecord, the default behaviour is to return nil or false for failures, and leave the exception control flow to methods ending in a bang (#save!).
– Marten Veldthuis
Aug 12 '11 at 8:07
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How to get the nth element of a python list or a default if not available
...it: I removed the check for TypeError - probably better to let the caller handle this.
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What does !! mean in ruby?
...ly not necessary to use though since the only false values to Ruby are nil and false, so it's usually best to let that convention stand.
Think of it as
!(!some_val)
One thing that is it used for legitimately is preventing a huge chunk of data from being returned. For example you probably don't ...
How can I remove a specific item from an array?
I have an array of numbers and I'm using the .push() method to add elements to it.
97 Answers
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How do I do multiple CASE WHEN conditions using SQL Server 2008?
...s a combination of the first two, with the outer case being the first type and the inner case being the second type.
– flygoing
Sep 19 '17 at 14:01
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How to change tab size on GitHub?
... It's only available as part of the editing feature through the Ace editor and the change is not persisted.
This blog post gives some more information about the embedded IDE.
However, provided you know the url of the blob (file) you're willing to review, you can switch to the edit mode easily by c...
What does iota of std::iota stand for?
I'm assuming the "i" is increment and the "a" is assign, but I could not figure out or find the answer. Also, it looks very similar to the non-standard itoa which I think is confusing.
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Why is no one using make for Java?
...Java project that I've seen either uses Maven or Ant. They are fine tools and I think just about any project can use them. But what ever happened to make ? It's used for a variety of non-Java projects and can easily handle Java. Sure you have to download make.exe if you use Windows, but Ant and...
Best practice to call ConfigureAwait for all server-side code
When you have server-side code (i.e. some ApiController ) and your functions are asynchronous - so they return Task<SomeObject> - is it considered best practice that any time you await functions that you call ConfigureAwait(false) ?
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Why switch is faster than if
...ave a check, a jump to the next clause, a check, a jump to the next clause and so on. With switch the JVM loads the value to compare and iterates through the value table to find a match, which is faster in most cases.
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