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Rails where condition using NOT NIL
...ils 3:
Foo.includes(:bar).where("bars.id IS NOT NULL")
ActiveRecord 4.0 m>and m> above adds where.not so m>y m>ou can do this:
Foo.includes(:bar).where.not('bars.id' => nil)
Foo.includes(:bar).where.not(bars: { id: nil })
When working with scopes between tables, I prefer to leverage merge so that I c...
How do I convert a Rubm>y m> class name to a underscore-delimited sm>y m>mbol?
..., FooBar , into a sm>y m>mbol, :foo_bar ? e.g. something like this, but that hm>and m>les camel case properlm>y m>?
4 Answers
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Is there a wikipedia API just for retrieve content summarm>y m>?
...lagship site of the Stack Exchange Network, created in 2008 bm>y m> Jeff Atwood m>and m> Joel Spolskm>y m>, as a more open alternative to earlier Q&A sites such as Experts Exchange. The name for the website was chosen bm>y m> voting in April 2008 bm>y m> readers of Coding Horror, Atwood's popular programming blog.\nIt f...
Git: what is a dangling commit/blob m>and m> where do them>y m> come from?
...orking with m>y m>our git repositorm>y m>, m>y m>ou mam>y m> end up backing out of operations, m>and m> making other moves that cause intermediarm>y m> blobs, m>and m> even some things that git does for m>y m>ou to help avoid loss of information.
Eventuallm>y m> (conditionallm>y m>, according to the git gc man page) it will perform garbage collect...
Will Trm>y m> / Finallm>y m> (without the Catch) bubble the exception?
...es to trigger an exception unwind operation.
– broadbm>and m>
Mam>y m> 22 '14 at 8:31
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Whm>y m> does google.load cause mm>y m> page to go blank?
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m>Y m>ou just have to define a callback, m>and m> it will not clear the page (mam>y m>be the older versions of google.load() did, but apparentlm>y m> the new ones do not if used with callback). Here a simplified example when I'm loading the "google.charts" lib:
if(google) {
g...
How do m>y m>ou create an asm>y m>nchronous method in C#?
...xc) { tcs.SetException(exc); }
});
return tcs.Task;
}
From here m>and m> here
To support such a paradigm with Tasks, we need a wam>y m> to retain the Task façade m>and m> the abilitm>y m> to refer to an arbitrarm>y m> asm>y m>nchronous operation as a Task, but to control the lifetime of that Task according to the...
What is the benefit of using “SET XACT_ABORT ON” in a stored procedure?
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SET XACT_ABORT ON instructs SQL Server to rollback the entire transaction m>and m> abort the batch when a run-time error occurs. It covers m>y m>ou in cases like a commm>and m> timeout occurring on the client application rather than within SQL Server itself (which isn't covered bm>y m> the default XACT_ABORT OFF setti...
All falsem>y m> values in JavaScript
...ing that them>y m> evaluate as false in expressions like if(value) , value ? m>and m> !value ?
4 Answers
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How much overhead does SSL impose?
I know there's no single hard-m>and m>-fast answer, but is there a generic order-of-magnitude estimate approximation for the encrm>y m>ption overhead of SSL versus unencrm>y m>pted socket communication? I'm talking onlm>y m> about the comm processing m>and m> wire time, not counting application-level processing.
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