大约有 40,000 项符合查询结果（耗时：0.0501秒） [XML]
Why would you use an ivar?
...un", (cft * 10000000000.0) / kRuns);
Output:
1: 23.0 picoseconds/run
2: 98.4 picoseconds/run
This is 4.28 times slower and this was a non-atomic primitive int, pretty much the best case; most other cases are even worse (try an atomic NSString * property!). So if you can live with the fact that ...
What is the “FS”/“GS” register intended for?
...ritten code on 6809 (with and without paged memory), 6502, z80, 68k and 80[123]?86, my perspective is that segmented memory is a horror show and I'm glad it was consigned to the dustbin of history. The use of FS and GS for efficient access of thread_local data is a happy unintended consequence of an...
Client-server synchronization pattern / algorithm?
... a user's name has changed then the delta can be something like {revision: 123, name: "John Doe"}
– dipole_moment
Jan 3 '17 at 17:23
add a comment
|
...
Why does struct alignment depend on whether a field type is primitive or user-defined?
... 4-byte integers and put &test in the Address field:
0x000000E928B5DE98 0ed750e0 000000e9 11111111 00000000 22222222 00000000
0xe90ed750e0 is the string pointer on my machine (not yours). You can easily see the Int32Wrappers, with the extra 4 bytes of padding that turned the size into 24 ...
Why is a round-trip conversion via a string not safe for a double?
...64(0xc350000000000000),
/*6*/ I64(0xf424000000000000),
/*7*/ I64(0x9896800000000000),
/*8*/ I64(0xbebc200000000000),
/*9*/ I64(0xee6b280000000000),
/*10*/ I64(0x9502f90000000000),
/*11*/ I64(0xba43b74000000000),
/*12*/ I64(0xe8d4a51000000000),
/*13*/ I64(0x9184e72a000...
What does “abstract over” mean?
... def add(a: Product, b: Product) = Product(a.value * b.value)
}
val sumOf123 = mapReduce(List(1,2,3), Sum)
val productOf456 = mapReduce(List(4,5,6), Product)
We have abstracted over monoids and foldables.
share
...
Verifying signed git commits?
...e commit e18443e, commit aeff29d, commit ca194d5, commit 434060e, commit 8e98e5f, commit a4cc18f, commit d66aeff (21 Jun 2015) by brian m. carlson (bk2204).
(Merged by Junio C Hamano -- gitster -- in commit ba12cb2, 03 Aug 2015)
verify-tag/verify-commit: add option to print raw gpg status info...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...mbers, compressed size: 13683 compression factor: 0.34
bucket[1] contains: 9885 numbers, compressed size: 13479 compression factor: 0.34
...
bucket[98] contains: 10026 numbers, compressed size: 13612 compression factor: 0.34
bucket[99] contains: 10058 numbers, compressed size: 13701 compression fact...
What is 'Context' on Android?
...
123
A Context is a handle to the system; it provides services like resolving resources, obtaining ...
What do
...use it with a Foo containing something other than a String:
scala> Foo(123).getStringLength
<console>:9: error: could not find implicit value for parameter evidence: =:=[Int,String]
You can read that error as "could not find evidence that Int == String"... that's as it should be! getStri...