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Check whether a variable is a string in Ruby
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I think you are looking for instance_of?. is_a? and kind_of? will return true for instances from derived classes.
class X < String
end
foo = X.new
foo.is_a? String # true
foo.kind_of? String # true
foo.instance_of? String # false
foo.instance_of? X ...
Open application after clicking on Notification
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See below code. I am using that and it is opening my HomeActivity.
NotificationManager notificationManager = (NotificationManager) context
.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(ico...
How to remove .htaccess password protection from a subdirectory
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You need to create a new .htaccess file in the required directory and include the Satisfy any directive in it like so, for up to Apache 2.3:
# allows any user to see this directory
Satisfy Any
The syntax changed in Apache 2.4, this has the same effect:
Require all granted
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Mounting multiple volumes on a docker container?
...; gcc -o myapp ./mycode.c; cd tst; ./myapp < ./test.txt' This is my command, I'm trying to compile the mycode.c that is in the first volume, but give that same file an stdin from a different volume. How do I do it?
– momal
Mar 23 '15 at 16:00
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Script to get the HTTP status code of a list of urls?
...rs will notice that this uses one curl process per URL, which imposes fork and TCP connection penalties. It would be faster if multiple URLs were combined in a single curl, but there isn't space to write out the monsterous repetition of options that curl requires to do this.)
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A method to reverse effect of java String.split()? [duplicate]
...d mark this as the answer to your question. Earn some points for yourself and for @john-topley.
– L S
Jun 7 '12 at 21:10
1
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How to specify a editor to open crontab file? “export EDITOR=vi” does not work
I'm using Red Hat Enterprise Linux 5, and I want to set the vim editor to edit the crontab file.
8 Answers
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Emulating a do-while loop in Bash
...s an actual program whereas : is built-in. The former simply exits with 0 (and false with 1) the latter does absolutely nothing. You can check with which true.
– Fleshgrinder
Dec 2 '19 at 7:01
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Batch not-equal (inequality) operator
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this requires command extensions to be turned on (They are by default on 2000+ but can be turned off system wide or as a parameter to cmd.exe) Normally you should turn them on with setlocal, but for a simple if not equal test, just use "if not...
How to display the current year in a Django template?
...mon use case I've seen for wanting the current year is a copyright notice, and it's really not that important for it to be perfect for that 24 hours while Jan 1st makes its way around the world.
– Endophage
Sep 26 '11 at 22:42
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