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PyCharm shows unresolved references error for valid code
...
For anybody still confused (in PyCharm 3.4.1): Settings > Project Settings > Project Interpreter > Project Interpreters (gear button > more) > --Select the interpreter-- > Interpreter Paths (Directory Tree button on the right) > Reload List of Paths (Blue refre...
Assignment inside lambda expression in Python
...ing the accumulated result being passed around in a reduce() expression:
>>> f = lambda a, b: (a.append(b) or a) if (b not in a) else a
>>> input = ["foo", u"", "bar", "", "", "x"]
>>> reduce(f, input, [])
['foo', u'', 'bar', 'x']
>>>
You can, of course, tweak...
How to get a subset of a javascript object's properties
...d
const object = { a: 5, b: 6, c: 7 };
const picked = (({ a, c }) => ({ a, c }))(object);
console.log(picked); // { a: 5, c: 7 }
From Philipp Kewisch:
This is really just an anonymous function being called instantly. All of this can be found on the Destructuring Assignment ...
How do I get elapsed time in milliseconds in Ruby?
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end_time = Time.now
elapsed_time = end_time.to_ms - start_time.to_ms # => 3004
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Find an element in a list of tuples
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>>> [i for i in a if 1 in i]
[(1, 2), (1, 4)]
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Temporarily disable some plugins using pathogen in vim.
...sabled, 'csscolor')
endif
" Gundo requires at least vim 7.3
if v:version < '703' || !has('python')
call add(g:pathogen_disabled, 'gundo')
endif
if v:version < '702'
call add(g:pathogen_disabled, 'autocomplpop')
call add(g:pathogen_disabled, 'fuzzyfinder')
call add(g:pathogen_...
Add params to given URL in Python
...ng requested params to be added
:return: string with updated URL
>> url = 'http://stackoverflow.com/test?answers=true'
>> new_params = {'answers': False, 'data': ['some','values']}
>> add_url_params(url, new_params)
'http://stackoverflow.com/test?data=some&...
Can iterators be reset in Python?
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Yes, if you use numpy.nditer to build your iterator.
>>> lst = [1,2,3,4,5]
>>> itr = numpy.nditer([lst])
>>> itr.next()
1
>>> itr.next()
2
>>> itr.finished
False
>>> itr.reset()
>>> itr.next()
1
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What's the difference between “static” and “static inline” function?
... {return i+1};
.... // some code
int i;
.... // some more code
for (i=0; i<999999; i = Inc(i)) {/*do something here*/};
This tight loop will perform a function call on each iteration, and the function content is actually significantly less than the code the compiler needs to put to perform the ...
How to capitalize the first letter in a String in Ruby
...nce Ruby v2.4.0 supports Unicode case mapping:
"мария".capitalize #=> Мария
Ruby 2.3 and lower:
"maria".capitalize #=> "Maria"
"мария".capitalize #=> мария
The problem is, it just doesn't do what you want it to, it outputs мария instead of Мария.
If you'...