大约有 40,000 项符合查询结果（耗时：0.0586秒） [XML]
Objective-C ARC: strong vs retain and weak vs assign
...
In fact, under ARC it is a compilation error to use assign for an object. You have to use either weak or unsafe_unretained (which is unsafe, obviously) if you don't want to retain the property.
– cobbal
Jan 19 '12 at 15:07
...
Input from the keyboard in command line application
...fies the number of bytes to read
///
///:returns: the string, or nil if an error was encountered trying to read Stdin
public func readln(max:Int = 8192) -> String? {
assert(max > 0, "max must be between 1 and Int.max")
var buf:Array<CChar> = []
var c = getchar()
while c ...
How to expand/collapse a diff sections in Vimdiff?
...s/vimrc#L103
– ankr
Oct 9 '14 at 13:05
add a comment
|
...
Mysql - How to quit/exit from stored procedure
...ink space is necessary between : and BEGIN as proc_label:BEGIN gave syntax error while proc_label: BEGIN worked.
– Umair Malhi
Aug 9 '17 at 10:06
|
...
How do you do a limit query in JPQL or HQL?
...cently upgraded from 2 to 3 and same thing, top X is now throwing a parser error. However, when I added setMaxResults on the query, it did generate a TOP X in the resulting SQL (using MsSql2008Dialect). This is good.
– Thierry_S
Nov 4 '13 at 17:00
...
What is a regular expression which will match a valid domain name without a subdomain?
...
This should match all cases I think: ^([a-z0-9])(([a-z0-9-]{1,61})?[a-z0-9]{1})?(\.[a-z0-9](([a-z0-9-]{1,61})?[a-z0-9]{1})?)?(\.[a-zA-Z]{2,4})+$
– transilvlad
May 16 '13 at 16:38
...
Python unittests in Jenkins?
...tests.py
import random
try:
import unittest2 as unittest
except ImportError:
import unittest
class SimpleTest(unittest.TestCase):
@unittest.skip("demonstrating skipping")
def test_skipped(self):
self.fail("shouldn't happen")
def test_pass(self):
self.assertEqua...
Python - 'ascii' codec can't decode byte
I'm really confused. I tried to encode but the error said can't decode... .
7 Answers
...
Insert auto increment primary key to existing table
...
For those like myself getting a Multiple primary key defined error try:
ALTER TABLE `myTable` ADD COLUMN `id` INT AUTO_INCREMENT UNIQUE FIRST NOT NULL;
On MySQL v5.5.31 this set the id column as the primary key for me and populated each row with an incrementing value.
...
Find size of an array in Perl
...one doesn't turn on warnings. Assigning anything but zero to $[ will be an error in 5.16. Can we stop mentioning $[ already?
– ikegami
Sep 13 '11 at 19:05
2
...