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Trigger a Travis-CI rebuild without pushing a commit?

... I have found and used that in other cases. But I could have sworn I had a case where it had Errored for the reason I described above, and the gear menu lacked that option. Perhaps that was a one-time fluke, or perhaps I was mistaken. Anyw...
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List of standard lengths for database fields

I'm designing a database table and once again asking myself the same stupid question: How long should the firstname field be? ...
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How to set environment variable or system property in spring tests?

...rk. Even better: probably a @BeforeClass method to set the system property and an @AfterClass method to remove it would also work, and nicely clean up after itself. (Didn't try it out, though.) – Hans-Peter Störr Aug 27 '12 at 15:39 ...
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Is REST DELETE really idempotent?

...quests is the same as for a single request. The methods GET, HEAD, PUT and DELETE share this property. Also, the methods OPTIONS and TRACE SHOULD NOT have side effects, and so are inherently idempotent. " The key bit there is the side-effects of N > 0 identical requests is the same a...
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Assigning a variable NaN in python without numpy

...r all comparisons returning false for IEEE754 NaN values? for more details and information. Instead, use math.isnan(...) if you need to determine if a value is NaN or not. Furthermore, the exact semantics of the == operation on NaN value may cause subtle issues when trying to store NaN inside con...
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Any reason to prefer getClass() over instanceof when generating .equals()?

I'm using Eclipse to generate .equals() and .hashCode() , and there is an option labeled "Use 'instanceof' to compare types". The default is for this option to be unchecked and use .getClass() to compare types. Is there any reason I should prefer .getClass() over instanceof ? ...
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How do I list the functions defined in my shell?

... declare -F Function names and definitions may be listed with the -f option to the declare builtin command (see Bash Builtins). The -F option to declare will list the function names only (and optionally the source file and line number). Bash Re...
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How to make “if not true condition”?

I would like to have the echo command executed when cat /etc/passwd | grep "sysa" is not true. 6 Answers ...
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Recommended way to get hostname in Java

Which of the following is the best and most portable way to get the hostname of the current computer in Java? 11 Answers ...
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Can one AngularJS controller call another?

... @JoshNoe in 1/ you have two controllers (or more) and they both get one identical/shared service. Then, you have multiple ways how to communicate, some of them you mentioned. I would decide based on your specific use case. You can put the shared logic/state into the service ...