大约有 45,000 项符合查询结果（耗时：0.0540秒） [XML]
What's the dSYM and how to use it? (iOS SDK)
... 0x00000001045a0e70 BLEConnection.peripheral(_:didUpdateValueFor:error:) + 69232 (BLEConnection.swift:293)
10 F49088168M 0x00000001045a0f4c @objc BLEConnection.peripheral(_:didUpdateValueFor:error:) + 69452 (<compiler-generated>:0)
By default dSYM is generated ...
Can I have multiple primary keys in a single table?
...s auto-incremented. This will work only in MyISAM. InnoDB will generate an error "ERROR 1075 (42000): Incorrect table definition; there can be only one auto column and it must be defined as a key".
DROP TABLE IF EXISTS `test`.`animals`;
CREATE TABLE `test`.`animals` (
`grp` char(30) NOT NULL,
...
Entity Framework is Too Slow. What are my options? [closed]
...ved a LOT of time in other simpler cases, with less code and less room for error and the queries are compiler verified and match the database. Less code is easier maintenance and less room for errors.
– JulianR
Dec 29 '11 at 18:11
...
JdbcTemplate queryForInt/Long is deprecated in Spring 3.2.2. What should it be replaced by?
...ception. The compiler didn't warn You about this. You will know about this error at runtime. The same error You will have if You have method that return primitive type:
public long getValue(String sql) {
return = jdbcTemplate.queryForObject(sql, Long.class);
}
The deprecated method queryForLo...
Why does Python pep-8 strongly recommend spaces over tabs for indentation?
...is for fools who enjoy getting tripped up on those 1 space off indentation errors. If your indentation was off by 1 tab, I guarantee you'd notice it.
– Sepero
Jun 6 '13 at 10:37
12...
Actual meaning of 'shell=True' in subprocess
...gt; subprocess.call('echo $HOME')
Traceback (most recent call last):
...
OSError: [Errno 2] No such file or directory
>>>
>>> subprocess.call('echo $HOME', shell=True)
/user/khong
0
Setting the shell argument to a true value causes subprocess to spawn an intermediate shell pro...
Correct idiom for managing multiple chained resources in try-with-resources block?
...sort of obscure knowledge.
Also there's the "destruction". If there is an error condition, then you probably don't want to be flushing rubbish to a file that needs deleting (code for that not shown). Although, of course, deleting the file is also another interesting operation to do as error handlin...
How to unpack and pack pkg file?
...
I get an error running cat Payload | gunzip -dc |cpio -i: gunzip: unknown compression format;0 blocks. I'm trying to open BSD.pkg from OS X Yosemite installation package.
– shrx
Oct 29 '14 at 10:...
How to pretty-print a numpy.array without scientific notation and with given precision?
...) and len(arg) == 0):
tf[ 2*j + 1 ] = "%s" # %f -> %s, not error
continue
args[j], isarray = _tonumpyarray(arg)
if isarray and fmt[-1] in "defgEFG":
tf[ 2*j + 1 ] = "%s"
fmtfunc = (lambda x: fmt % x)
formatter = dict( f...
Show pop-ups the most elegant way
...t). Now we click send or buy or whatever from that popup, and there is an error whereby the user needs to amend that order in the previous screen. I want to display that error in another popup at the top level. This approach doesn't facilitate this I don't believe.
– jusop...