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unable to install pg gem
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I had this problem, this worked for me:
Install the postgresql-devel package, this will solve the issue of pg_config missing.
sudo apt-get install libpq-dev
share
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improve t...
无人驾驶汽车大难题 人工智能同人的差距显著 - 资讯 - 清泛网 - 专注C/C++...
...自《纽约时报》的记者进行试乘，当时谷歌车辆即将经过一个红绿灯路口，系统检测到对面车道有车辆正以较快的速度行驶。为了避免可能出现的意外，谷歌车辆猛向右边车道变道，但实际上对面的车辆仅仅是在尝试能否通过红...
open read and close a file in 1 line of code
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You don't really have to close it - Python will do it automatically either during garbage collection or at program exit. But as @delnan noted, it's better practice to explicitly close it for various reasons.
So, what you can do to keep it short, simpl...
PostgreSQL error 'Could not connect to server: No such file or directory'
...m getting this error when I run rake db:migrate in my project or even try most database tasks for my Ruby on Rails 3.2 applications.
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Find all files with name containing string
...Bar.conf.sample" -print
The -iname works either on GNU or BSD (including OS X) version find command. If your version of find command does not supports -iname, try the following syntax using grep command:
find $HOME | grep -i "hello.c"
find $HOME -name "*" -print | grep -i "hello.c"
OR try
find...
Class JavaLaunchHelper is implemented in both … libinstrument.dylib. One of the two will be used. Wh
I upgraded to the latest Java 7u40 on MacOS X and started getting the following message on the console when launching my application using Eclipse. The app works fine but I would like to find out the cause of the problem and hopefully a fix for it.
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How do I read a text file of about 2 GB? [duplicate]
I have a .txt file whose memory is more than 2 GB. The problem is I cannot open it with Notepad, Notepad++ or any other editor programs.
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Read binary file as string in Ruby
... you the entire file in a string.
After that, you probably want to file.close. If you don’t do that, file won’t be closed until it is garbage-collected, so it would be a slight waste of system resources while it is open.
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How to use sed to remove the last n lines of a file
...states: The application shall ensure that the number option-argument is a positive decimal integer.
– William Pursell
Nov 14 '12 at 15:51
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How to uninstall editable packages with pip (installed with -e)
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is there supposed to be any output to that command? I get it says running develop but I still the .egg-info file...is it suppose to remove it?
– Pinocchio
Apr 27 at 20:39
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