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Pythonic way to create a long multi-line string
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2313
Are you talking about multi-line strings? Easy, use triple quotes to start and end them.
s = ...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
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1003
I would recommend using INSERT...ON DUPLICATE KEY UPDATE.
If you use INSERT IGNORE, then the ro...
How would you go about parsing Markdown? [closed]
...tten in OCaml, it is extremely simple and short (268 SLOC for the parser, 43 SLOC for the HTML emitter), yet blazingly fast (20% faster than discount (written in hand-optimized C) and sixhundred times faster than BlueCloth (Ruby)), despite the fact that it isn't even optimized for performance yet. B...
Why should I use Hamcrest-Matcher and assertThat() instead of traditional assertXXX()-Methods
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173
There's no big advantage for those cases where an assertFoo exists that exactly matches your int...
Resize image proportionally with MaxHeight and MaxWidth constraints
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3 Answers
3
Active
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What's the difference between a proc and a lambda in Ruby?
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An example:
p = Proc.new {|a, b| puts a**2+b**2 } # => #<Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lambda {|a, b| puts a**2+b**2 } # => #<Proc:0x15016c@(irb):5 (lambda)>
l.ca...
Does Ruby regular expression have a not match operator like “!~” in Perl?
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3 Answers
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Active
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Select every Nth element in CSS
...;/h1>
<div>1</div> <div>2</div>
<div>3</div> <div>4</div>
<h2></h2>
<div>5</div> <div>6</div>
<div>7</div> <div>8</div>
<h2></h2>
<div>9</div> <...
What is tail recursion?
...ple function that adds the first N natural numbers. (e.g. sum(5) = 1 + 2 + 3 + 4 + 5 = 15).
Here is a simple JavaScript implementation that uses recursion:
function recsum(x) {
if (x === 1) {
return x;
} else {
return x + recsum(x - 1);
}
}
If you called recsum(5), th...
Move all files except one
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143
If you use bash and have the extglob shell option set (which is usually the case):
mv ~/Linux/O...