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Is it possible to make the -init method private in Objective-C?
...ect is used, don't bother. Specifically, don't bother with the "override +allocWithZone:, -init, -retain, -release" method of creating singletons. It's virtually always unnecessary and is just adding complication for no real significant advantage.
Instead, just write your code such that your +sha...
Which parts of Real World Haskell are now obsolete or considered bad practice?
...re_ptr -- release with free()
return (Right (Regex reg str))
As malloc() should be used with free(), new with delete, allocate with deallocate, one should always use the correct function.
TL;DR You should always free memory with the same allocator that allocated it for you.
If a fore...
Difference between a “coroutine” and a “thread”?
...d for a certain amount time (on a single processor machine). The scheduler allocates time (timeslicing) to each thread, and if the thread isn't finished within that time, the scheduler pre-empts it (interrupts it and switches to another thread). Multiple threads can run in parallel on a multi-proce...
Pointers, smart pointers or shared pointers? [duplicate]
...assume you meant scoped pointer which uses the RAII pattern. It is a stack-allocated object that wraps a pointer; when it goes out of scope, it calls delete on the pointer it wraps. It "owns" the contained pointer in that it is in charge of deleteing it at some point. They allow you to get a raw ref...
Initialize a byte array to a certain value, other than the default null? [duplicate]
...then discarding several (perhaps many) intermediate arrays instead of just allocating a single array and then filling it.
– LukeH
May 27 '11 at 9:25
3
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How can I use “sizeof” in a preprocessor macro?
...wer, but to add on to Mike's version, here's a version we use that doesn't allocate any memory. I didn't come up with the original size check, I found it on the internet years ago and unfortunately can't reference the author. The other two are just extensions of the same idea.
Because they are type...
How do I convert Long to byte[] and back in java
...
public byte[] longToBytes(long x) {
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
buffer.putLong(x);
return buffer.array();
}
public long bytesToLong(byte[] bytes) {
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES);
buffer.put(bytes);
buffer.flip();//need flip ...
Is there a command to refresh environment variables from the command prompt in Windows?
... Perhaps you can avoid the temporary file using the FOR /F "tokens=1,*" %%c IN ('resetvars.vbs') DO construct
– tzot
Oct 5 '08 at 9:51
2
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Javascript when to use prototypes
...eriting from a prototype. After that, it depends on how many instances you allocate of each type. But in many modular designs, there is only one instance of a given type.
And in fact, it has been suggested by many people that implementation inheritance is evil. That is, if there are some common ope...
Return a `struct` from a function in C
... function, to which I replied: "No! You'd return pointers to dynamically malloc ed struct s instead."
9 Answers
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