大约有 32,000 项符合查询结果（耗时：0.0499秒） [XML]
Ruby on Rails and Rake problems: uninitialized constant Rake::DSL
... This worked for me. I needed to do bundle update rake first. Then I checked with bundle show rake. It should say 0.8.7. Then rake db:migrate.
– B Seven
May 23 '11 at 1:25
...
UIView Hide/Show with animation
...n do one of the following:
1) set button.layer.shouldRasterize = YES; and then use the alpha animation code that Michail provided in his answer. This will prevent the layers from blending weirdly, but has a slight performance penalty, and can make the button look blurry if it's not aligned exactly ...
Where is PHP.ini in Mac OS X Lion? Thought it was in /usr/local/php5/lib
...he config file solved the problem:
cp /etc/php.ini.default /etc/php.ini
Then in /etc/php.ini add the following line (using the correct path to your mcrypt.so file):
extension="/usr/local/Cellar/php54-mcrypt/5.4.29/mcrypt.so"
Then restart Apache2:
apachectl restart
...
grant remote access of MySQL database from any IP address
...es.
Bonus-Tip: Revoke Access
If you accidentally grant access to a user, then better have revoking option handy.
Following will revoke all options for USERNAME from all machines:
mysql> REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'USERNAME'@'%';
Following will revoke all options for USERNAME fro...
Using the scrollwheel in GNU screen
...f your current TERM. To confirm it works, ^A^D to detach from your screen, then screen -d -r to reattach, then ls a few times, and try to scroll back. It works for me.
What is this magic? Well, let's consult the manual pages.
screen(1) says:
termcapinfo term terminal-tweaks [window-tweaks]
[...
How do I run a program with a different working directory from current, from Linux shell?
...loworld)
The parentheses cause a sub-shell to be spawned. This sub-shell then changes its working directory to /c, then executes helloworld from /a. After the program exits, the sub-shell terminates, returning you to your prompt of the parent shell, in the directory you started from.
Error handli...
Copy all the lines to clipboard
...and look for the +xterm_clipboard flag. If it is preceded by a minus sign, then you won't have this functionality. If this is the case, you might want to compile vim yourself, or run gvim which usually has this feature enabled.
– nelstrom
Oct 26 '09 at 15:12
...
Force “portrait” orientation mode
... It can change if you launch another activity that alters the orientation, then that new activity exits, returning you back to your activity. For example, the default image capture intent on the Samsung Galaxy S3 does that in certain orientations.
– Gordon McCreight
...
How to check if a variable is set in Bash?
...
(Usually) The right way
if [ -z ${var+x} ]; then echo "var is unset"; else echo "var is set to '$var'"; fi
where ${var+x} is a parameter expansion which evaluates to nothing if var is unset, and substitutes the string x otherwise.
Quotes Digression
Quotes can be om...
You have already activated X, but your Gemfile requires Y
...uestion is: why doesn't the virgin ruby get the right dependencies and why then complain about having the wrong ones?
– Otheus
Jul 19 '16 at 17:03
...