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Android: how do I check if activity is running?
...the same class running? What if you extend MyActivity with MyChildactivity and want to check if the child is active?
– Mister Smith
Sep 2 '13 at 10:27
2
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What does immutable mean?
...dited Feb 28 '15 at 2:23
Samar Panda
3,49633 gold badges2121 silver badges3131 bronze badges
answered Jul 8 '10 at 1:57
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How to check if mysql database exists
... OK, apparently PHPMyAdmin just displays all database names in lower case, and your query works using both anyway
– Hubro
Jun 15 '12 at 13:21
1
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Creating an empty file in Ruby: “touch” equivalent?
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FileUtils.touch looks like what it does, and mirrors* the touch command:
require 'fileutils'
FileUtils.touch('file.txt')
* Unlike touch(1) you can't update mtime or atime alone. It's also missing a few other nice options.
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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
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Braces ($var vs. ${var})
In most cases, $var and ${var} are the same:
var=foo
echo $var
# foo
echo ${var}
# foo
The braces are only needed to resolve ambiguity in expressions:
var=foo
echo $varbar
# Prints nothing because there is no variable 'varbar'
echo ${var}bar...
Java equivalent to C# extension methods
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But the syntax is so nice, and makes the program easier to understand :) I also like how Ruby allows you to do almost the same thing, except you can actually modify the built in classes and add new methods.
– knownasilya
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SFTP in Python? (platform independent)
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Paramiko supports SFTP. I've used it, and I've used Twisted. Both have their place, but you might find it easier to start with Paramiko.
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Ways to synchronize interface and implementation comments in C# [closed]
Are there automatic ways to sync comments between an interface and its implementation?
I'm currently documenting them both and wouldn't like to manually keep them in sync.
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How to parse float with two decimal places in javascript?
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glad to help and keep up the good work on -- "learning a new thing every day"
– Mahesh Velaga
Dec 14 '10 at 1:55
3
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Correct file permissions for WordPress [closed]
...ge to the user to www-data with su,
give wp-content group write access 775 and join the group www-data or
give your user the access rights to the folder using ACLs.
Whatever you do, make sure the files have rw permissions for www-data.
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