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How to preserve line breaks when storing a command output to a variable in bash?
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What if you want to do something like FOO="$(echo $VAR)"; how do you quote $VAR properly when it's already inside quotes?
– weberc2
Jan 5 '19 at 21:50
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Is it valid to define functions in JSON results?
...xecution.
[{"data":[["1","2"],["3","4"]],"aFunction":"function(){return \"foo bar\";}"}]
This leads to question's like: How to "Execute JavaScript code stored as a string".
Be prepared, to raise your "eval() is evil" flag and stick your "do not tunnel functions through JSON" flag next to it.
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validation custom message for rails 3
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A custom message for a boolean with conditionals might be:
validates :foo, inclusion: { in: [true, false], message: "cannot be blank" }, if: :bar?
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Can you remove elements from a std::list while iterating through it?
...ions. That is simply how function work. And it has nothing to do with your foo.b(i++).c(i++) example (which is undefined in any case)
– jalf
Feb 28 '09 at 15:59
77
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Can I squash commits in Mercurial?
... Seems the most natural way for git people ;)
– foo
Dec 9 '17 at 6:37
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Which HTTP methods match up to which CRUD methods?
...ly not the only way to do it; if the client knows that it wants to create /foo/abc and knows what content to put there, it works just fine as a PUT.
The canonical description of a POST is when you're committing to purchasing something: that's an action which nobody wants to repeat without knowing i...
Is there auto type inferring in Java?
...imilar to auto keyword in C++
List<String> strList = Arrays.asList("foo", "bar", "baz");
for (val s: strList){
System.out.println(s.length());
}
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Python time measure function
... func.__name__, int(elapsedTime * 1000)))
return newfunc
@timeit
def foobar():
mike = Person()
mike.think(30)
The context manager method
from contextlib import contextmanager
@contextmanager
def timeit_context(name):
startTime = time.time()
yield
elapsedTime = time.time...
Python argparse: default value or specified value
...e default and since I need to do some ops, I have something like this self.foo = (args.bar or some_else_source).upper(). It will break on None object AFAIUC.
– 0andriy
Aug 12 '19 at 14:02
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Best way to create custom config options for my Rails app?
...ocument describes config_for method as:
Convenience for loading config/foo.yml for the current Rails env.
If you do not want to use a yaml file
As Rails official guide says:
You can configure your own code through the Rails configuration object with custom configuration under the config...