大约有 16,000 项符合查询结果（耗时：0.0542秒） [XML]
Android List View Drag and Drop sort
...rial for it. It must be something that others need as well. Can anyone point me to some code for doing this?
6 Answers
...
What does “while True” mean in Python?
...the while statement is going to be evaluated as a boolean. Meaning it gets converted into either true or false.
Consider in the statement while(6 > 5)
It first evaluates the expression 6 > 5 which is true so is the same as saying while(true)
Anything that is not FALSE, 0, an emptry string ...
SQL query to select dates between two dates
...
Tried this today, you could also use convert(date, Date) between '2011/02/25' and '2011/02/27' (at least with a recent MS SQL Server). The convert() part will take care of stripping the time part and the between comparison will then work as expected.
...
java get file size efficiently
...on;
public static void main(String[] args) throws Exception {
int runs = 5;
int iterations = 50;
EnumMap<FileSizeBench, Long> durations = new EnumMap<FileSizeBench, Long>(FileSizeBench.class);
for (int i = 0; i < runs; i++) {
for (Fil...
Where in memory are my variables stored in C?
By considering that the memory is divided into four segments: data, heap, stack, and code, where do global variables, static variables, constant data types, local variables (defined and declared in functions), variables (in main function), pointers, and dynamically allocated space (using malloc and ...
startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
...your FirstActivity.Java as follows
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
}
So this will call your fragment's onActivityResult()
Edit: the solution is to replace getActivity().startActivityF...
Array to Hash Ruby
... @tester, the * is called the splat operator. It takes an array and converts it a literal list of items. So *[1,2,3,4] => 1, 2, 3, 4. In this example, the above is equivalent to doing Hash["item 1", "item 2", "item 3", "item 4"]. And Hash has a [] method that accepts a list of arguments (m...
How to determine the screen width in terms of dp or dip at runtime in Android?
...ndroid widgets using dip/dp (in java files). At runtime if I code,
int pixel=this.getWindowManager().getDefaultDisplay().getWidth() ;
...
LINQ: Distinct values
... .Select(element => new {
id = (int) element.Attribute("id"),
category = (int) element.Attribute("cat") })
.Distinct();
If you're trying to get a distinct set of values of a "larger" type, but only looking at so...
C++STL容器使用经验总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ctor、string或deque，则使用erase-remove习惯用法。
SeqContainer<int> c;
c.erase(remove(c.begin(),c.end(),1963),c.end());
如果容器是list，则使用list::remove。
如果容器是一个标准关联容器，则使用它的erase成员函数。
要删除容器中满足特定条件的...