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Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
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143
Yes, it's subassignment in R using <- (or = or ->) that makes a copy of the whole object...
Ignore Xcode warnings when using Cocoapods
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edited Sep 19 '15 at 4:55
King-Wizard
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Can I use conditional statements with EJS templates (in JMVC)?
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172
For others that stumble on this, you can also use ejs params/props in conditional statements:
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Rails: Default sort order for a rails model?
...y evaluation), so 7 scopes could be chained together but only resulting in 1 actual database query, to avoid performance problems from executing 7 separate queries.
You can use a passed in parameter such as a date or a user_id (something that will change at run-time and so will need that 'lazy eval...
Why is the order in dictionaries and sets arbitrary?
...and lets assume the table size is 8 slots. In Python 2.7, hash('foo') is -4177197833195190597, hash('bar') is 327024216814240868. Modulo 8, that means these two keys are slotted in slots 3 and 4 then:
>>> hash('foo')
-4177197833195190597
>>> hash('foo') % 8
3
>>> hash('ba...
'No Transport' Error w/ jQuery ajax call in IE
... spent to understand, I finally found this:
http://bugs.jquery.com/ticket/10660
The Solution is simple, just set this:
$.support.cors = true;
and Ajax cross domain requests will work!
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Why switch is faster than if
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111
Because there are special bytecodes that allow efficient switch statement evaluation when ther...
How to import module when module name has a '-' dash or hyphen in it?
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122
you can't. foo-bar is not an identifier. rename the file to foo_bar.py
Edit: If import is n...
Gson ignoring map entries with value=null
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Android: alternate layout xml for landscape mode
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218
By default, the layouts in /res/layout are applied to both portrait and landscape.
If you have...
