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schema builder laravel migrations unique on two columns
...s the first param to create a unique key across multiple columns.
$table->unique(array('mytext', 'user_id'));
or (a little neater)
$table->unique(['mytext', 'user_id']);
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Adding dictionaries together, Python [duplicate]
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>>> dic0 = {'dic0':0}
>>> dic1 = {'dic1':1}
>>> ndic = dict(dic0.items() + dic1.items())
>>> ndic
{'dic0': 0, 'dic1': 1}
>>>
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Getting MAC Address
...It's crossplatform and makes a bit more sense than using socket or uuid.
>>> import netifaces
>>> netifaces.interfaces()
['lo', 'eth0', 'tun2']
>>> netifaces.ifaddresses('eth0')[netifaces.AF_LINK]
[{'addr': '08:00:27:50:f2:51', 'broadcast': 'ff:ff:ff:ff:ff:ff'}]
pyp...
Keyboard shortcut for Jump to Previous View Location (Navigate back/forward) in IntelliJ IDEA
...e some Intel grafics driver shorcuts on windows. Right click the desktop -> select Screen Resolution -> Click Advanced settings -> Click the vendor tab "Intel(R) ..." -> Hit the graphics properties or similar button -> Select Options and Support tab -> Disable Hotkey functionality....
Python memory usage of numpy arrays
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You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
>>> from sys import getsizeof
>>> a = [0] * 1024
>>> b = np.array(a)
>>> getsizeof(a)
8264
>>> b.nbytes
8192
...
HttpUtility does not exist in the current context
...like me, who are annoyed by this and can't find it right away :
Project -> Properties -> Application -> Target Framework -> select ".Net Framework 4"
the project will then save and reload.
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Developing for Android in Eclipse: R.java not regenerating
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Doing Project->Clean is what caused the problem for me. Cleaning deletes R.java...and for whatever reason the plugin is not regenerating the file.
– Cerin
Jul 13 '12 at 15:51
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Python int to binary string?
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Python's string format method can take a format spec.
>>> "{0:b}".format(37)
'100101'
Format spec docs for Python 2
Format spec docs for Python 3
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IntelliJ show JavaDocs tooltip on mouse over
...DE Settings
EDIT: For IntelliJ 14, the option has been moved to Editor > General page. It's the last option in the "Other" group. (For Mac the option is under the menu "IntelliJ Idea" > "Preferences").
EDIT: For IntelliJ 16, it's the second-to-last option in Editor > General > Other....
How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
...g the set_xlim method of the matplotlib.axes.Axes class.
For instance,
>>> ax.set_xlim(left_limit, right_limit)
>>> ax.set_xlim((left_limit, right_limit))
>>> ax.set_xlim(left=left_limit, right=right_limit)
One limit may be left unchanged (e.g. the left limit):
>...