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Maximum single-sell profit
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I love this problem. It's a classic interview question and depending on how you think about it, you'll end up getting better and better solutions. It's certainly possible to do this in better than O(n2) time, and I've listed three d...
What are the differences in die() and exit() in PHP?
...ere's no difference - they are the same.
PHP Manual for exit:
Note: This language construct is equivalent to die().
PHP Manual for die:
This language construct is equivalent to exit().
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Java - get the current class name?
All I am trying to do is to get the current class name, and java appends a useless non-sense $1 to the end of my class name. How can I get rid of it and only return the actual class name?
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What is the difference between CHARACTER VARYING and VARCHAR in PostgreSQL?
...ER VARYING in the places where I use VARCHAR .
I am a beginner, while he is an expert.
This suggests me that there is something which I do not know.
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Objective-C: difference between id and void *
What is the difference between id and void * ?
7 Answers
7
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What is the “Execute Around” idiom?
What is this "Execute Around" idiom (or similar) I've been hearing about?
Why might I use it, and why might I not want to use it?
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What is the “right” way to iterate through an array in Ruby?
PHP, for all its warts, is pretty good on this count. There's no difference between an array and a hash (maybe I'm naive, but this seems obviously right to me), and to iterate through either you just do
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Why can I use a function before it's defined in JavaScript?
This code always works, even in different browsers:
7 Answers
7
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sqlalchemy IS NOT NULL select
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column_obj != None will produce a IS NOT NULL constraint:
In a column context, produces the clause a != b. If the target is None, produces a IS NOT NULL.
or use isnot() (new in 0.7.9):
Implement the IS NOT operator.
Normally, IS NOT is generate...
Is there an alternative to bastard injection? (AKA poor man's injection via default constructor)
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As far as I understand, this question relates to how to expose a loosely coupled API with some appropriate defaults. In this case, you may have a good Local Default, in which case the dependency can be regarded as optional. One way to deal with option...