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Python argparse: default value or specified value
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286
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--example', nargs='?',...
Read input from console in Ruby?
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230
Are you talking about gets?
puts "Enter A"
a = gets.chomp
puts "Enter B"
b = gets.chomp
c = a...
Should JAVA_HOME point to JDK or JRE?
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122
If you're doing any sort of development, or building with Maven or Ant, you need to point to th...
PostgreSQL disable more output
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251
To disable pagination but retain the output, use:
\pset pager off
To remember this setting,...
URL query parameters to dict python
...b import parse
>>> url = "http://www.example.org/default.html?ct=32&op=92&item=98"
>>> parse.urlsplit(url)
SplitResult(scheme='http', netloc='www.example.org', path='/default.html', query='ct=32&op=92&item=98', fragment='')
>>> parse.parse_qs(parse.urlsplit...
How to use php serialize() and unserialize()
.... But how do you pass this array to Javascript?
Array ( [1] => elem 1 [2] => elem 2 [3] => elem 3 )
The answer is serialization. In case of PHP/Javascript, JSON is actually the better serialization format:
{ 1 : 'elem 1', 2 : 'elem 2', 3 : 'elem 3' }
Javascript can easily reverse thi...
Why is a round-trip conversion via a string not safe for a double?
... *dst = 0;
}
}
It turns out that _ecvt returns the string 845512408225570.
Notice the trailing zero? It turns out that makes all the difference!
When the zero is present, the result actually parses back to 0.84551240822557006, which is your original number -- so it compares equal, and h...
In Intellij, how do I toggle between camel case and underscore spaced?
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edited Oct 27 '17 at 8:19
Meo
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ans...
Timeout command on Mac OS X?
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kvzkvz
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