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What are type lambdas in Scala and what are their benefits?
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What's the difference between %s and %d in Python string formatting?
...that name is a string (%s) and number is an integer (%d for decimal).
See https://docs.python.org/3/library/stdtypes.html#printf-style-string-formatting for details.
In Python 3 the example would be:
print('%s %d' % (name, number))
...
Get element inside element by class and ID - JavaScript
...fixed . You should use jquery instead like below example.
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<div id="foo">
<di...
Type converting slices of interfaces
...
Here is the official explanation: https://github.com/golang/go/wiki/InterfaceSlice
var dataSlice []int = foo()
var interfaceSlice []interface{} = make([]interface{}, len(dataSlice))
for i, d := range dataSlice {
interfaceSlice[i] = d
}
...
Update Item to Revision vs Revert to Revision
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Real life trading API [closed]
...
https://www.quantopian.com
i suppose the newest, but has an online ide / debugger / visualizer, and integration with interactive brokers for paper trading and real trading. great community for R&D too
...
PostgreSQL database default location on Linux
...tabase and execute the command:
SHOW data_directory;
More information:
https://www.postgresql.org/docs/current/sql-show.html
https://www.postgresql.org/docs/current/runtime-config-file-locations.html
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What is the difference between and ?
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?
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Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
...pe the following in your Mac OS X terminal:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
After that, usage of Homebrew is brew install <package>.
One of the prerequisites for Homebrew are the XCode command line tools.
Install XCode from ...