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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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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...
Most efficient way to concatenate strings?
...e expected semantics of a 'string join' operation).
Next, given the total allocation size of the final string, the biggest boost in performance is gained by building the result string in-place. Doing this requires the (perhaps controversial) technique of temporarily suspending the immutability of a...
C/C++ include header file order
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@0A0D: The second issue is not a problem in the order here, because each .h has at least one .cpp that includes it first (indeed, in my personal code the Unit test associated includes it first, and the source code includes it in...
How do I convert Long to byte[] and back in java
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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 ...
Removing trailing newline character from fgets() input
... helpful answer. Can we use strlen(buffer) when buffer size is dynamically allocated using malloc ?
– rrz0
Nov 10 '18 at 10:16
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The apk must be signed with the same certificates as the previous version
...8 BST 2041
Certificate fingerprints:
MD5: A3:2E:67:AF:74:3A:BD:DD:A2:A9:0D:CA:6C:D4:AF:20
SHA1: A6:E7:CE:64:17:45:0F:B4:C7:FC:76:43:90:04:DC:A7:84:EF:33:E9
SHA256: FB:6C:59:9E:B4:58:E3:62:AD:81:42:...:09:FC:BC:FE:E7:40:53:C3:D8:14:4F
Signature algorithm name: SHA256withRSA
V...
C pointer to array/array of pointers disambiguation
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So, for 32 bit systems: int* arr[8]; /* 8x4 bytes allocated, for each pointer / int (*arr)[8]; / 4 bytes allocated, only a pointer */
– George
May 13 '09 at 18:43
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What Every Programmer Should Know About Memory?
...gepages work well on Linux without having to manually use hugetlbfs. Make allocations >= 2MiB with 2MiB alignment (e.g. posix_memalign, or an aligned_alloc that doesn't enforce the stupid ISO C++17 requirement to fail when size % alignment != 0).
A 2MiB-aligned anonymous allocation will use hug...
Should I compile with /MD or /MT?
... of the CRT - which means they will all share a single CRT heap and memory allocated in one .exe/.dll can be freed in another.
If you use the static CRT for your .exe and all .dlls then they'll all get a seperate copy of the CRT - which means they'll all use their own CRT heap so memory must be fre...