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How to retrieve a user environment variable in CMake (Windows)
...eck the contents, and I don't know if it would. But it certainly works for testing if it is defined or not!
– Janus Troelsen
Dec 10 '11 at 1:22
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What do
...ough not particularly well documented.
They are meant to provide a way to test the relationship between the classes, just like <: and <% do, in situations when the latter cannot be used.
As for the question "when should I use them?", the answer is you shouldn't, unless you know you should. :...
How to tell if rails is in production?
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Hauleth is absolutely correct. This is simply to test what environment you're in while developing.
– bkunzi01
Sep 23 '15 at 14:31
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What is http multipart request?
.../balderdashy/skipper/blob/master/… If I get some time to put together a test case using PhantomJS/webkit, I'll add the link there as well. Browsers obey this part of the spec, even as far back as IE6.
– mikermcneil
Aug 3 '14 at 23:20
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Should JAVA_HOME point to JDK or JRE?
...nt your JAVA_HOME at jdk to access javac copiler etc. It's good if you can test your program to run on the JRE though. If you are using an app server you often also need the JDK instead of the JRE but that depends on the particular server.
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Rails how to run rake task
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As a theoretical test, I tried running Rake::Task['db:seed'].invoke but it does not run, saying "Don't know how to build task 'db:seed'"
– lulalala
Sep 4 '13 at 7:40
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Convert numpy array to tuple
...flow control by exceptions is usually frowned upon. Would it be better to test if type(a)==numpy.ndarray?
– Mike
Apr 5 '12 at 15:36
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How long is the SHA256 hash?
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you can use this select statement to test it: SELECT length(to_base64(unhex(sha2('say hello to my little friend',256)))) , it is always 44 whatever the length of original string is.
– DrAhmedJava
Apr 9 '17 at 13:57
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How do I use a file grep comparison inside a bash if/else statement?
.... error
fi
For the record, [ expr ] is a shell builtin† shorthand for test expr.
Since grep returns with status 0 in case of a match, and non-zero status in case of no matches, you can use:
if grep -lq '^MYSQL_ROLE=master' ; then
# do one thing
else
# do another thing
fi
Note the us...
Removing a model in rails (reverse of “rails g model Title…”)
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Try this
rails destroy model Rating
It will remove model, migration, tests and fixtures
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