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How do I exchange keys with values in a dictionary?
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@CarlMeyer additionally for n > 1e6 (or 1e9) the memory usage will also be really large... and also slow this down a bunch.
– Trevor Boyd Smith
Nov 29 '18 at 17:39
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POST data to a URL in PHP
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cURL-less you can use in php5
$url = 'URL';
$data = array('field1' => 'value', 'field2' => 'value');
$options = array(
'http' => array(
'header' => "Content-type: application/x-www-form-urlencoded\r\n",
'method' => 'POST',
'content' => http_b...
How do I specify new lines on Python, when writing on files?
... (considering your example):
f = open('out.txt', 'w')
print 'First line' >> f
print >> f
print 'Second line' >> f
f.close()
Not only is it OS-agnostic (without even having to use the os package), it's also more readable than putting \n within strings.
Explanation
The print() f...
Instance attribute attribute_name defined outside __init__
... avoid another warning caused when you declare self.my_string:str = None => "Expected type 'str' got None instead. Am curious if str() takes more memory than None, and why this solution is less pythonic if it avoids an IDE warning...
– Nono London
Mar 7 at 2...
Undefined symbols for architecture i386: _OBJC_CLASS_$_SKPSMTPMessage", referenced from: error
...t and you need to add the .m file manually.
To do this:
TargetSettings -> Build Phases -> Compile Sources -> add your .m class ->Build and Run
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How to import module when module name has a '-' dash or hyphen in it?
...wn scope, you can use execfile
# contents of foo-bar.py
baz = 'quux'
>>> execfile('foo-bar.py')
>>> baz
'quux'
>>>
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Force Intellij IDEA to reread all maven dependencies
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I was right-clicking the parent project and doing Maven -> Reimport and hoped it'll update the dependencies of all the children, but it did not. Thanks for the solution!
– botchniaque
Nov 20 '14 at 10:21
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How to get a specific “commit” of a gem from github?
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Any of these should work:
gem 'rails', :git => 'git://github.com/rails/rails.git', :ref => '4aded'
gem 'rails', :git => 'git://github.com/rails/rails.git', :branch => '2-3-stable'
gem 'rails', :git => 'git://github.com/rails/rails.git', :tag => 'v2.3....
How to extract extension from filename string in Javascript? [duplicate]
...ng var re = /(?:\.([^./]+))?$/; to capture following case as well: a.b/c -> c is the file and has no suffix
– Christian
Mar 28 '13 at 15:09
4
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Reference alias (calculated in SELECT) in WHERE clause
...otal - CreditTotal) AS BalanceDue
FROM Invoices
) AS x
WHERE BalanceDue > 0;
Or just repeat the expression:
SELECT (InvoiceTotal - PaymentTotal - CreditTotal) AS BalanceDue
FROM Invoices
WHERE (InvoiceTotal - PaymentTotal - CreditTotal) > 0;
I prefer the latter. If the expression is e...