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Check whether a variable is a string in Ruby
Is there anything more idiomatic than the following?
6 Answers
6
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Android and in TextView
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That works great. You can add that to xml or in java code. Work fine in java code, in xml I haven't tested to much, but it should do the job.
– Mikooos
Jul 4 '11 at 7:52
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Comparing Haskell's Snap and Yesod web frameworks
The two Haskell web frameworks in the news recently are Yesod (at 0.8) and Snap (at 0.4).
4 Answers
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What is the purpose of the Visual Studio Hosting Process?
... by the feature. There's another one that you're bound to run into sooner or later: it uses a different app.config file. The active one is named yourapp.vshost.exe.config. Watch out for this when you make manual changes to the file.
Another feature it supports that's very visible when you debug ...
difference between collection route and member route in ruby on rails?
... But what about adding a "get" without any block? Is it member or collection route? My test showed its collection but with different id variable name.
– lzap
Apr 19 '11 at 15:12
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Printing a variable memory address in swift
Is there anyway to simulate the [NSString stringWithFormat:@"%p", myVar] , from Objective-C, in the new Swift language?
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Java, List only subdirectories from a directory, not files
In Java, How do I list only subdirectories from a directory?
13 Answers
13
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Check existence of input argument in a Bash shell script
...ariable will tell you the number of input arguments the script was passed.
Or you can check if an argument is an empty string or not like:
if [ -z "$1" ]
then
echo "No argument supplied"
fi
The -z switch will test if the expansion of "$1" is a null string or not. If it is a null string then t...
Using global variables between files?
I'm bit confused about how the global variables work. I have a large project, with around 50 files, and I need to define global variables for all those files.
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How do I list all cron jobs for all users?
Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab , and whatever's in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /e...