大约有 47,000 项符合查询结果(耗时:0.0470秒) [XML]

https://stackoverflow.com/ques... 

How to combine class and ID in CSS selector?

...is is super old and people keep finding it: don't use the tagNames in your selectors. #content.myClass is faster than div#content.myClass because the tagName adds a filtering step that you don't need. Use tagNames in selectors only where you must! ...
https://stackoverflow.com/ques... 

Binding an enum to a WinForms combo box, and then setting it

...s.DataSource = Enum.GetValues(typeof(Status)); Getting the enum from the selected item Status status; Enum.TryParse<Status>(cbStatus.SelectedValue.ToString(), out status); share | improv...
https://stackoverflow.com/ques... 

Oracle PL/SQL - How to create a simple array variable?

... INDEX BY PLS_INTEGER; employee_array employee_arraytype; BEGIN SELECT * BULK COLLECT INTO employee_array FROM employee WHERE department = 10; -- FOR i IN employee_array.FIRST .. employee_array.LAST LOOP -- Do something END LOOP; END; The associative arra...
https://stackoverflow.com/ques... 

Postgresql - unable to drop database because of some auto connections to DB

...n psql) You can then terminate all connections to this db except your own: SELECT pid, pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = current_database() AND pid <> pg_backend_pid(); On older versions pid was called procpid so you'll have to deal with that. Since you've revo...
https://stackoverflow.com/ques... 

How to use if-else option in JSTL

...prefix="c" uri="http://www.springframework.org/tags/form"%> and <c:select> <option value="RCV" ${records[0].getDirection() == 'RCV' ? 'selected="true"' : ''}> <spring:message code="dropdown.Incoming" text="dropdown.Incoming" /> ...
https://stackoverflow.com/ques... 

Access denied for user 'test'@'localhost' (using password: YES) except root user

...' IDENTIFIED BY 'password'; This statement creates a new user and grants selected privileges to it. I.E.: GRANT INSERT, SELECT, DELETE, UPDATE ON database.* TO 'user'@'localhost' IDENTIFIED BY 'password'; Take a look at the docs to see all privileges detailed EDIT: you can look for more info w...
https://stackoverflow.com/ques... 

iOS forces rounded corners and glare on inputs

...n be extended to apply to all webkit styled form components such as input, select, button or textarea. In reference to the original question, you wouldn't use the value 'none' when clearing any unit based css element. Also be aware that this hides checkboxes in Chrome, so perhaps use something like ...
https://stackoverflow.com/ques... 

Change project name on Android Studio

... Right-click on your root project directory Select Refactor -> Rename Select rename project and change the name there. Also Select rename module and change it there as well. If you get an message saying module name already changed thats fine. Now right-click on the ...
https://stackoverflow.com/ques... 

“Cannot evaluate expression because the code of the current method is optimized” in Visual Studio 20

...this issue when I was using VS 2010. My solution configuration has (Debug) selected. I resolved this by unchecking the Optimize Code property under project properties. Project (right Click)=> Properties => Build (tab) => uncheck Optimize code ...
https://stackoverflow.com/ques... 

Is there a difference between copy initialization and direct initialization?

...ain function : int main() { A a1 = 1; // OK: copy-initialization selects A::A(int) A a2(2); // OK: direct-initialization selects A::A(int) A a3 {4, 5}; // OK: direct-list-initialization selects A::A(int, int) A a4 = {4, 5}; // OK: copy-list-initialization selects A::A(i...