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Rails 3 execute custom sql query without a model
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100
connection = ActiveRecord::Base.connection
connection.execute("SQL query")
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Hidden Features of C++? [closed]
... C++ programmers are familiar with the ternary operator:
x = (y < 0) ? 10 : 20;
However, they don't realize that it can be used as an lvalue:
(a == 0 ? a : b) = 1;
which is shorthand for
if (a == 0)
a = 1;
else
b = 1;
Use with caution :-)
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Limits of Nat type in Shapeless
...ponds to the number of nested shapeless.Succ[] types:
scala> Nat(3)
res10: shapeless.Succ[shapeless.Succ[shapeless.Succ[shapeless._0]]] = Succ()
So to represent the number 1000000, you would have a type that is nested 1000000 levels deep, which would definitely blow up the scala compiler. The ...
What is Pseudo TTY-Allocation? (SSH and Github)
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101
As explained in "gitolite: PTY allocation request failed on channel 0", it is important to do ...
C++ Exceptions questions on rethrow of original exception
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Mar 2 '10 at 3:12
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Is it possible to reference one CSS rule within another?
...s: 15px;
border-top-right-radius: 5px;
-moz-border-radius-topleft: 10px;
-moz-border-radius-topright: 10px;
}
You can also apply multiple classes to a single HTML element (the class attribute takes a space separated list).
<div class="opacity radius">
Either of those appro...
How do I add the contents of an iterable to a set?
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answered Oct 28 '10 at 17:25
SingleNegationEliminationSingleNegationElimination
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jquery append to front/top of list
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edited Jul 10 '13 at 3:18
answered Jul 4 '13 at 9:22
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Validate phone number with JavaScript
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Dec 2 '10 at 18:36
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In Jinja2, how do you test if a variable is undefined?
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answered Oct 1 '10 at 20:14
GarrettGarrett
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