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How to convert a byte array to a hex string in Java?
...so useful they really should be on your class path by default, and this is one of them.
– corsiKa
Aug 21 '13 at 15:36
29
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Possible reasons for timeout when trying to access EC2 instance
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Did you set an appropriate security group for the instance? I.e. one that allows access from your network to port 22 on the instance. (By default all traffic is disallowed.)
Update: Ok, not a security group issue. But does the problem persist if you launch up another instance from the sam...
Hashing a dictionary?
...he body of the question, the answer is complete.)
Nested Dictionaries
If one searches Stack Overflow for how to hash a dictionary, one might stumble upon this aptly titled question, and leave unsatisfied if one is attempting to hash multiply nested dictionaries. The answer above won't work in thi...
AddRange to a Collection
... would elliminate that operator. That is a objectively an improvement, but one that is not related to the original question. In that particular case the two forms are a matter of personal preferences, and I would prefer the "!="-operator, given the reasoning above.
– rymdsmurf
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Multiple Models in a single django ModelForm?
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You can just show both forms in the template inside of one <form> html element. Then just process the forms separately in the view. You'll still be able to use form.save() and not have to process db loading and saving yourself.
In this case you shouldn't need it, but if yo...
trying to animate a constraint in swift
...s and made sure the constraint on the left has the lower priority then the one that I am trying to animate on the right side.
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How do I get bash completion to work with aliases?
... This is the only correct answer I've seen amongst many wrong ones.
– eighteyes
Mar 22 '13 at 19:16
45
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What command means “do nothing” in a conditional in Bash?
... difficult to read. Bash is a DevOps language, and if : is written by someone on my team, I'd have them change it.
– SaintHax
May 29 '17 at 19:51
3
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Rails 3.1: Engine vs. Mountable App
Can someone help me understand the differences between a Rails Engine and a Mountable app? In Rails 3.1, you can create either one with the "rails new plugin ___ " command.
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How to install packages using pip according to the requirements.txt file from a local directory?
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One caution with this is you may pip install <some_module> without using requirements.txt but that will not update requirements.txt. An alternative might be updating a docker such that it lists all the pip install comma...