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Gem::LoadError for mysql2 gem, but it's already in Gemfile
... it's the wrong command and could have unintended consequences. (To revert from bundle update, run git checkout -- Gemfile.lock)
– Nick
Jun 8 '16 at 18:00
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C# - How to get Program Files (x86) on Windows 64 bit
... Very helpful! this just saved me hours of work! and saved people from having to use my code. It's great when things work out of the box!
– David Silva Smith
Feb 5 '10 at 15:00
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Is there any free OCR library for Android? [closed]
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Tesseract will not be a short walk from C to java. The code I've seen is highly idiomatic 80's C and not easily transportable to other languages.
– plinth
Dec 21 '09 at 15:16
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unable to install pg gem
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Confirmation, from the pg gem Wiki homepage: "On Ubuntu, /usr/bin/pg_config is provided by the libpq-dev package."
– Mark Berry
Oct 5 '11 at 0:28
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How to check which version of v8 is installed with my NodeJS?
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Interesting how the definition of fun can vary from an individual to another :)
– Arnaud Leyder
Nov 25 '15 at 16:00
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What is the difference between the dot (.) operator and -> in C++? [duplicate]
...ed to return an intermediate proxy object which has a foo member different from that in the originating class. Wouldn't that assert( (*boo).foo == boo->foo ) fail. It is true that one should be cautious as the c++ elves may be lurking in the dark.
– g24l
Ja...
ld cannot find an existing library
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Installing libgl1-mesa-dev from the Ubuntu repo resolved this problem for me.
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How do I get an empty array of any size in python?
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You can use numpy:
import numpy as np
Example from Empty Array:
np.empty([2, 2])
array([[ -9.74499359e+001, 6.69583040e-309],
[ 2.13182611e-314, 3.06959433e-309]])
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How to print like printf in Python3?
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Simple printf() function from O'Reilly's Python Cookbook.
import sys
def printf(format, *args):
sys.stdout.write(format % args)
Example output:
i = 7
pi = 3.14159265359
printf("hi there, i=%d, pi=%.2f\n", i, pi)
# hi there, i=7, pi=3.14
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Rails 3 migrations: Adding reference column?
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See section 2.1 from edgeguides.rubyonrails.org/active_record_migrations.html for example.
– B Seven
Nov 19 '14 at 22:36
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