大约有 40,000 项符合查询结果（耗时：0.0734秒） [XML]
convert_tz returns null
...his will happen if you haven't loaded the time zone table into mysql.
mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql
mysql is the name of the built-in database that holds MySQL-specific configuration data.
...
Haml: Control whitespace around text
...
To answer the original question:
I will first
= succeed ',' do
= link_to 'link somewhere', 'http://example.com'
- if @condition
then render this half of the sentence if a condition is met
Produces:
I will first
<a href="http://example.com">link somewhere</a>,
then render this ...
How do I capture the output into a variable from an external process in PowerShell?
...d of piping to Out-String:
$cmdOutput = <command> 2>&1 | % { $_.ToString() };
in PS v3+ you can simplify to:
$cmdOutput = <command> 2>&1 | % ToString
(As a bonus, if the output isn't captured, this produces properly interleaved output even when printing to the console.)
Al...
When would I use Task.Yield()?
...equires some "long running" initialization, ie:
private async void button_Click(object sender, EventArgs e)
{
await Task.Yield(); // Make us async right away
var data = ExecuteFooOnUIThread(); // This will run on the UI thread at some point later
await UseDataAsync(data);
}
...
“Auto Layout still required after executing -layoutSubviews” with UITableViewCell subclass
...UITableViewCellAutolayoutIHope)
+ (void)load
{
Method existing = class_getInstanceMethod(self, @selector(layoutSubviews));
Method new = class_getInstanceMethod(self, @selector(_autolayout_replacementLayoutSubviews));
method_exchangeImplementations(existing, new);
}
- (void)_autolayout...
64-bit version of Boost for 64-bit windows
... it is also possible to use the stagedir parametter: "bjam --stagedir=./lib_64bit address-model=64 toolset=msvc threading=multi" and "bjam --stagedir=./lib toolset=msvc threading=multi"
– Odin
Jul 11 '12 at 15:20
...
Why can't I make a vector of references?
...
Checking the assignable concept at boost.org/doc/libs/1_39_0/doc/html/Assignable.html all operations except the swap are valid on references.
– amit
Aug 18 '09 at 16:01
...
How do I set up a simple delegate to communicate between two view controllers?
... super.viewDidLoad()
}
@IBAction func btnSendDataPushed(_ sender: UIButton) {
// Call the delegate method from SecondVC
self.delegate?.sendData(data:self.data)
dismiss(animated: true, completion: nil)
}
}
ViewCo...
How to find third or nth maximum salary from salary table?
...
Use ROW_NUMBER(if you want a single) or DENSE_RANK(for all related rows):
WITH CTE AS
(
SELECT EmpID, EmpName, EmpSalary,
RN = ROW_NUMBER() OVER (ORDER BY EmpSalary DESC)
FROM dbo.Salary
)
SELECT EmpID, EmpName, ...
Continuous Integration for Ruby on Rails? [closed]
...ison of Jenkins vs Hudson development activity: ohloh.net/p/compare?project_0=Jenkins&project_1=Hudson
– Vanuan
May 15 '12 at 11:36
...