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'sudo gem install' or 'gem install' and gem locations
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Contrary to all the other posts I suggest NOT using sudo when installing gems.
Instead I recommend you install RVM and start a happy life with portable gem homes and different version of Ruby all living under one roof.
For the uninitiated, from the d...
Accessing localhost (xampp) from another computer over LAN network - how to?
...ll my files on my desktop computer (192.168.1.56) and want to access localhost over there from another computer (192.168.1.2).
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How to get line count of a large file cheaply in Python?
...t of a large file (hundreds of thousands of lines) in python. What is the most efficient way both memory- and time-wise?
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Can't install Ruby under Lion with RVM – GCC issues
Most questions regarding this problem are due to missing Xcode; I have Xcode 4.2 installed.
16 Answers
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Does Python have a ternary conditional operator?
If Python does not have a ternary conditional operator, is it possible to simulate one using other language constructs?
26 ...
Can't create handler inside thread that has not called Looper.prepare()
...e calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example.
Look up Communicating with the UI Thread in the documentation. In a nutshell:
// Set this up in the UI thread.
mHa...
setting an environment variable in virtualenv
... highly recommend doing so), you can define different hooks (preactivate, postactivate, predeactivate, postdeactivate) using the scripts with the same names in $VIRTUAL_ENV/bin/. You need the postactivate hook.
$ workon myvenv
$ cat $VIRTUAL_ENV/bin/postactivate
#!/bin/bash
# This hook is run after...
Java maximum memory on Windows XP
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@Christopher, Is it possible to use 64-bit JVM on a 32-bit Windows XP?
– Pacerier
May 9 '14 at 20:48
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Fast check for NaN in NumPy
...e of NaNs than in their absence. It also seems to get slower as NaNs get closer to the start of the array. On the other hand, sum's throughput seems constant regardless of whether there are NaNs and where they're located:
In [40]: x = np.random.rand(100000)
In [41]: %timeit np.isnan(np.min(x))
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Vagrant error : Failed to mount folders in Linux guest
...e. After I did this then the guests VboxAdditions updated, and matched my host. And all we fine without a hitch. I just have to maintain equal versions on both guest and host. Thanks for the pointer @karlingen
– Rixhers Ajazi
Jun 6 '14 at 17:31
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