大约有 40,000 项符合查询结果（耗时：0.8942秒） [XML]
Smart way to truncate long strings
...k.
First you clip the string to the desired length, next you clip the result of that to its last word boundary
function truncate( str, n, useWordBoundary ){
if (str.length <= n) { return str; }
const subString = str.substr(0, n-1); // the original check
return (useWordBoundary
? subS...
Get Enum from Description attribute [duplicate]
...
public static class EnumEx
{
public static T GetValueFromDescription<T>(string description) where T : Enum
{
foreach(var field in typeof(T).GetFields())
{
if (Attribute.GetCustomAttribute(field,
typeof(DescriptionAttribute)) is DescriptionAttri...
Polymorphism in C++
...er-specified polymorphism
You can write f() such that it can operate on multiple types in any of the following ways:
Preprocessing:
#define f(X) ((X) += 2)
// (note: in real code, use a longer uppercase name for a macro!)
Overloading:
void f(int& x) { x += 2; }
void f(double& x) { ...
Spring JPA @Query with LIKE
...sername FROM User u WHERE u.username LIKE CONCAT('%',:username,'%')")
List<String> findUsersWithPartOfName(@Param("username") String username);
Notice: The table name in JPQL must start with a capital letter.
share
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How to make a element expand or contract to its parent container?
The goal is to have the <svg> element expand to the size of its parent container, in this case a <div> , no matter how big or small that container may be.
...
Java 8 stream's .min() and .max(): why does this compile?
...So examining the Comparator interface (simple version):
public Comparator<T> {
T compare(T o1, T o2);
}
If a method is looking for a Comparator<Integer>, then it's essentially looking for this signature:
int xxx(Integer o1, Integer o2);
I use "xxx" because the method name is no...
Why cast unused return values to void?
...ject (for all well behaving classes that is! :)). Another example is: os <<"Hello World" << std::endl. Each of them returns the "os" object.
– Richard Corden
Mar 27 '09 at 18:07
...
GetProperties() to return all properties for an interface inheritance hierarchy
...pe)
{
if (type.IsInterface)
{
var propertyInfos = new List<PropertyInfo>();
var considered = new List<Type>();
var queue = new Queue<Type>();
considered.Add(type);
queue.Enqueue(type);
while (queue.Count > 0)
{
...
Why do I get an UnsupportedOperationException when trying to remove an element from a List?
...y the List.
Fix
Create a LinkedList, which supports faster remove.
List<String> list = new LinkedList<String>(Arrays.asList(split));
On split taking regex
From the API:
String.split(String regex): Splits this string around matches of the given regular expression.
| is a reg...
What's the difference of “./configure” option “--build”, “--host” and “--target”?
The script ./configure accepts 3 options --build , --host and --target . I'm confusing their roles. What's the difference and semantics of them?
...