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Resumable downloads when using PHP to send the file?

...e first thing you need to do is to send the Accept-Ranges: bytes header in all responses, to tell the client that you support partial content. Then, if request with a Range: bytes=x-y header is received (with x and y being numbers) you parse the range the client is requesting, open the file as usua...
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Get class name of django model

... Django models are derived from the ModelBase, which is the Metaclass for all models. share | improve this answer | follow | ...
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What does “program to interfaces, not implementations” mean?

...t worried about implementation and the interface signature determines what all operations can be done. This can be used to change the behavior of a program at run-time. It also helps you to write far better programs from the maintenance point of view. Here's a basic example for you. public enum La...
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What does the caret operator (^) in Python do?

...his way: 1000 # 8 (binary) 0011 # 3 (binary) ---- # APPLY XOR ('vertically') 1011 # result = 11 (binary) share | improve this answer | follow | ...
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Android Studio says “cannot resolve symbol” but project compiles

...alidate and Restart" option to fix this. EDIT 2: This fix should work for all similar incidents and is not a twitter4j specific resolution. share | improve this answer | fol...
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Does Swift support reflection?

...s to me it's just a hack to enable debugging in Xcode. Protocol Mirror actually quotes the word IDE several times. – Sulthan Jun 6 '14 at 7:50 7 ...
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Python constructors and __init__

Why are constructors indeed called "Constructors"? What is their purpose and how are they different from methods in a class? ...
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How do I diff the same file between two different commits on the same branch?

... The .. isn't really necessary, though it'll work with it (except in fairly old versions, maybe). You can also use git log or gitk to find SHA1s to use, should the two commits be very far apart. gitk also has a "diff selected -> this" and...
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Is errno thread-safe?

...t errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ? ...
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Get the client IP address using PHP [duplicate]

... I usually don't like nested ternaries, but I really like it in this case... – Charles Harmon Jul 18 '14 at 20:49 ...