大约有 37,000 项符合查询结果（耗时：0.0189秒） [XML]
ruby on rails f.select options with custom attributes
...
Rails CAN add custom attributes to select options, using the existing options_for_select helper. You almost had it right in the code in your question. Using html5 data-attributes:
<%= f.select :country_id, options_for_select(
@countries.map{ |c| [c.name, c.id,...
What is the purpose of std::make_pair vs the constructor of std::pair?
What is the purpose of std::make_pair ?
7 Answers
7
...
Partly JSON unmarshal into a map in Go
...t server will receive and unmarshal JSON data. This data will always be wrapped in an object with key/value pairs. The key-string will act as value identifier, telling the Go server what kind of value it is. By knowing what type of value, I can then proceed to JSON unmarshal the value into the corre...
Get the generated SQL statement from a SqlCommand object?
...
Whilst not perfect, here's something I knocked up for TSQL - could be easily tweaked for other flavors... If nothing else it will give you a start point for your own improvements :)
This does an OK job on data types and output paramete...
How to check if a path is absolute path or relative path in cross platform way with Python?
UNIX absolute path starts with '/', whereas Windows starts with alphabet 'C:' or '\'.
Does python has a standard function to check if a path is absolute or relative?
...
How to correctly use “section” tag in HTML5?
...ing several different articles I'm just confused. I'm trying to get some input on how it should be used.
6 Answers
...
How to explicitly discard an out argument?
...
Starting with C# 7.0, it is possible to avoid predeclaring out parameters as well as ignoring them.
public void PrintCoordinates(Point p)
{
p.GetCoordinates(out int x, out int y);
WriteLine($"({x}, {y})");
}
public void PrintXCoordinate(Point ...
MySQL dump by query
Is it possible to do mysqldump by single SQL query ?
9 Answers
9
...
Understand the “Decorator Pattern” with a real world example
I was studying the Decorator Pattern as documented in GOF .
14 Answers
14
...
How can I select an element with multiple classes in jQuery?
...ersection, like a logical AND), just write the selectors together without spaces in between:
$('.a.b')
The order is not relevant, so you can also swap the classes:
$('.b.a')
So to match a div element that has an ID of a with classes b and c, you would write:
$('div#a.b.c')
(In practice, you...