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What's the need of array with zero elements?

... This is a way to have variable sizes of data, without having to call malloc (kmalloc in this case) twice. You would use it like this: struct bts_action *var = kmalloc(sizeof(*var) + extra, GFP_KERNEL); This used to be not standard and was considered a hack (as Aniket said), but it was s...
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How to identify server IP address in PHP

... This is NOT the server address! This is the address the remote browser calls the server, which is under control of the remote user. Use the answer by John K instead – Ariel Feb 12 '15 at 10:36 ...
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How to create a new database after initally installing oracle database 11g Express Edition?

I have installed Oracle Database 11g Express Edition on my pc (windows 7) and I have installed Oracle SQL Developer as well. ...
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Drop all tables whose names begin with a certain string

How can I drop all tables whose names begin with a given string? 14 Answers 14 ...
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How to track untracked content?

...plugins/open_flash_chart_2 starts out as an independent Git repository. Usually such sub-repositories are ignored, but if you tell git add to explicitly add it, then it will create an gitlink entry that points to the sub-repository’s HEAD commit instead of adding the contents of the directory. It ...
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Error handling in C code

... your library as painless as possible think about these additions: store all possible error-states in one typedef'ed enum and use it in your lib. Don't just return ints or even worse, mix ints or different enumerations with return-codes. provide a function that converts errors into something huma...
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Unzip a file with php

...e it out by yourself. On the other hand, the fact that this code could actually be published online somewhere as the correct way to unzip a file is a bit frightening. PHP has built-in extensions for dealing with compressed files. There should be no need to use system calls for this. ZipArchivedocs ...
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How to determine if binary tree is balanced?

... some fraction of the minimum path length, like a half or a quarter. It really doesn't matter usually. The point of any tree-balancing algorithm is to ensure that you do not wind up in the situation where you have a million nodes on one side and three on the other. Donal's definition is fine in the...
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Types in MySQL: BigInt(20) vs Int(20)

...gInt , MediumInt , and Int are... it would seem obvious that they would allow for larger numbers; however, I can make an Int(20) or a BigInt(20) and that would make seem that it is not necessarily about size. ...
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Django: How do I add arbitrary html attributes to input fields on a form?

... earlier to modify 3 fields: ``` for field_name in ['image', 'image_small', 'image_mobile']: field = self.fields.get(field_name) field.widget.attrs['data-file'] = 'file' ``` – Stuart Axon Jun 6 '14 at 11:59 ...