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What do you call the -> operator in Ruby?
... lambda defined using -> is called lambda literal.
succ = ->(x){ x+1 }
succ.call(2)
The code is equivalent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal.
...
How to see which flags -march=native will activate?
...
152
You can use the -Q --help=target options:
gcc -march=native -Q --help=target ...
The -v opt...
Is there a builtin identity function in python?
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100
Doing some more research, there is none, a feature was asked in issue 1673203 And from Raymond...
Maven: how to override the dependency added by a library
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103
Simply specify the version in your current pom. The version specified here will override other...
How do I validate a date string format in python?
...ncorrect data format, should be YYYY-MM-DD")
>>> validate('2003-12-23')
>>> validate('2003-12-32')
Traceback (most recent call last):
File "<pyshell#20>", line 1, in <module>
validate('2003-12-32')
File "<pyshell#18>", line 5, in validate
raise Valu...
How can I do DNS lookups in Python, including referring to /etc/hosts?
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118
I'm not really sure if you want to do DNS lookups yourself or if you just want a host's ip. In...
Nested JSON objects - do I have to use arrays for everything?
... JSON like this:
{
"stuff": {
"onetype": [
{"id":1,"name":"John Doe"},
{"id":2,"name":"Don Joeh"}
],
"othertype": {"id":2,"company":"ACME"}
},
"otherstuff": {
"thing": [[1,42],[2,2]]
}
}
You can use it like this:
obj.stuf...
Setting Short Value Java
... a method setTableId(Short tableId) . Now when I try to write setTableId(100) it gives compile time error. How can I set the short value without declaring another short variable?
...
How to flatten only some dimensions of a numpy array
...
129
Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.s...
arrayfun can be significantly slower than an explicit loop in matlab. Why?
...
101
You can get the idea by running other versions of your code. Consider explicitly writing out t...