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Convert a negative number to a positive one in JavaScript
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16 Answers
16
Active
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Difference between addSubview and insertSubview in UIView class
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103
The only difference is in where the view is added: whether it is the frontmost view (addSubvi...
Why do python lists have pop() but not push()
...y a list.pop that removes and returns the last element (that indexed at -1) and list.append semantic is consistent with that use?
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Linq with group by having count
...s:
from c in db.Company
group c by c.Name into grp
where grp.Count() > 1
select grp.Key
Or, using the method syntax:
Company
.GroupBy(c => c.Name)
.Where(grp => grp.Count() > 1)
.Select(grp => grp.Key);
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delete vs delete[] operators in C++
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156
The delete operator deallocates memory and calls the destructor for a single object created wi...
How to bind function arguments without binding this?
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15 Answers
15
Active
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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...Ref.transaction(function (current_value) {
return (current_value || 0) + 1;
});
For more info, see https://www.firebase.com/docs/transactions.html
UPDATE:
Firebase recently released Cloud Functions. With Cloud Functions, you don't need to create your own Server. You can simply write JavaScript ...
Differences between utf8 and latin1
what is the difference between utf8 and latin1?
2 Answers
2
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Python: Using .format() on a Unicode-escaped string
....format(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2265' in position 0: ordinal not in range(128)
>>> print u"{0}".format(s)
≥
>>>
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How do I choose between Semaphore and SemaphoreSlim?
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edited Aug 26 '13 at 17:00
culix
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answ...