大约有 43,000 项符合查询结果（耗时：0.0530秒） [XML]
SQL select only rows with max value on a column [duplicate]
...d the same "max" as numeric comparison of the two numbers and it's easy to convert back to the original number using the substring function (which is available in one form or another pretty much everywhere).
share
|...
What does it mean for a data structure to be “intrusive”?
I've seen the term intrusive used to describe data structures like lists and stacks, but what does it mean?
2 Answers
...
How do I use a custom deleter with a std::unique_ptr member?
...) = default;
template <class U, class = std::enable_if_t<std::is_convertible<U*, Bar*>()>>
constexpr default_delete(default_delete<U>) noexcept {}
void operator()(Bar* p) const noexcept { destroy(p); }
};
And maybe also do std::make_unique():
template <>
...
Preserve line endings
...sed to do some substitution on windows and I noticed that it automatically converts line endings to Unix (\n). Is there an option to tell sed to use Windows line endings (\r\n) or even better to preserve the line endings from the file?
...
How do I add a path to PYTHONPATH in virtualenv
...t folder
$ add2virtualenv folder_to_add
console will display
Warning: Converting "folder_to_add" to "/absoutle/path/to/folder_to_add"
That's it, and you should be good to go
share
|
improve t...
Retain cycle on `self` with blocks
...'s no real alternative here. If you're designing your own block-based API, and it makes sense to do so, you could have the block get passed the value of self in as an argument. Unfortunately, this doesn't make sense for most APIs.
Please note that referencing an ivar has the exact same issue. If yo...
Windows batch: formatted date into variable
...l MS SQL Server, connect with a SQL Client, and execute the command SELECT CONVERT(VARCHAR(16), GETDATE(), 112)".
– isapir
Oct 13 '17 at 20:38
2
...
How to change the color of an svg element?
...a specific color, use the following Codepen(Click Here to open codepen) to convert a hex color code to a CSS filter:
For example, output for #00EE00 is
filter: invert(42%) sepia(93%) saturate(1352%) hue-rotate(87deg) brightness(119%) contrast(119%);
Add the CSS filter into this class.
...
How to parameterize @Scheduled(fixedDelay) with Spring 3.0 expression language?
...
I guess you can convert the value yourself by defining a bean. I haven't tried that, but I guess the approach similar to the following might be useful for you:
<bean id="FixedDelayLongValue" class="java.lang.Long"
factory-method="v...
Specify custom Date format for colClasses argument in read.table/read.csv
...
You can write your own function that accepts a string and converts it to a Date using the format you want, then use the setAs to set it as an as method. Then you can use your function as part of the colClasses.
Try:
setAs("character","myDate", function(from) as.Date(from, format=...