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Defining a function with multiple implicit arguments in Scala
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3 Answers
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Active
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What is “lifting” in Scala?
...gt;
scala> res1(-1)
res2: Option[Boolean] = None
scala> res1(1)
res3: Option[Boolean] = Some(false)
Methods
You can "lift" a method invocation into a function. This is called eta-expansion (thanks to Ben James for this). So for example:
scala> def times2(i: Int) = i * 2
times2: (i: In...
How to “pretty” format JSON output in Ruby on Rails
...ns of JSON. For example:
require 'json'
my_object = { :array => [1, 2, 3, { :sample => "hash"} ], :foo => "bar" }
puts JSON.pretty_generate(my_object)
Which gets you:
{
"array": [
1,
2,
3,
{
"sample": "hash"
}
],
"foo": "bar"
}
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Order a MySQL table by two columns
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493
Default sorting is ascending, you need to add the keyword DESC to both your orders:
ORDER BY ar...
How do you get the current project directory from C# code when creating a custom MSBuild task?
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answered May 3 '09 at 8:32
Iralda MitroIralda Mitro
6,41255 gold badges2121 silver badges2929 bronze badges
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jQuery .each() index?
...}
.container {
display: flex;
}
.one,
.two,
.three {
width: 33.3%;
}
.one {
background: yellow;
text-align: center;
}
.two {
background: pink;
}
.three {
background: darkgray;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"...
How to pass arguments and redirect stdin from a file to program run in gdb?
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136
Pass the arguments to the run command from within gdb.
$ gdb ./a.out
(gdb) r < t
Starting p...
Rails update_attributes without save?
...:08
Arel
3,42044 gold badges2929 silver badges7878 bronze badges
answered Aug 2 '12 at 17:54
Ajedi32Ajedi32
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