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How can I style even and odd elements?
Is it possible to use CSS pseudo-classes to select even and odd instances of list items?
9 Answers
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How do I find duplicates across multiple columns?
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Duplicated id for pairs name and city:
select s.id, t.*
from [stuff] s
join (
select name, city, count(*) as qty
from [stuff]
group by name, city
having count(*) > 1
) t on s.name = t.name and s.city = t.city
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zsh compinit: insecure directories
What does it mean and how can I fix it?
22 Answers
22
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throw new std::exception vs throw std::exception
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The conventional way to throw and catch exceptions is to throw an exception object and to catch it by reference (usually const reference). The C++ language requires the compiler to generate the appropriate code to construct the exception object and to pro...
In javascript, is an empty string always false as a boolean?
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Yes. Javascript is a dialect of ECMAScript, and ECMAScript language specification clearly defines this behavior:
ToBoolean
The result is false if the argument is the empty String (its length is zero);
otherwise the result is true
Quote taken from http://www.ecma-inte...
File tree view in Notepad++
...; Plugin Manager > Show Plugin Manager.
Then select the Explorer plugin and click the Install button.
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'npm' is not recognized as internal or external command, operable program or batch file
...vironment Variables on the System Properties.
After that, reopen your command prompt and type
npm
This should work.
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Convert to/from DateTime and Time in Ruby
How do you convert between a DateTime and a Time object in Ruby?
6 Answers
6
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What is the meaning of erb?
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erb stands for "Embedded RuBy". A .html.erb or .erb.html file is HTML with Ruby code embedded in; Rails will evaluate the Ruby to add content to the file dynamically, and will output a "pure" HTML file for rendering.
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Rename Pandas DataFrame Index
...csv file without header, with a DateTime index. I want to rename the index and column name, but with df.rename() only the column name is renamed. Bug? I'm on version 0.12.0
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