大约有 41,000 项符合查询结果（耗时：0.0420秒） [XML]
Providing white space in a Swing GUI
... //Show the window in the middle of the screen
}
/**
* @param args
*/
public static void main(String[] args) {
Runnable runnable = new Runnable() {
@Override
public void run() {
whiteSpace = new WhiteSpace();
}
...
When to choose checked and unchecked exceptions
...ntable: The caller did everything within their power to validate the input parameters, but some condition outside their control has caused the operation to fail. For example, you try reading a file but someone deletes it between the time you check if it exists and the time the read operation begins....
Is there a constraint that restricts my generic method to numeric types?
...:
static class Algorithms
{
public static T Sum<P, T>(this P p, params T[] a)
where P: INumericPolicy<T>
{
var r = p.Zero();
foreach(var i in a)
{
r = p.Add(r, i);
}
return r;
}
}
Usage:
int i = NumericPolicies....
val-mutable versus var-immutable in Scala
...utable:
Mutable objects can be modified inside methods, that take them as parameters, while reassignment is not allowed.
import scala.collection.mutable.ArrayBuffer
object MyObject {
def main(args: Array[String]) {
val a = ArrayBuffer(1,2,3,4)
silly(a)
println(a) // ...
Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...ache.cache[i + (-IntegerCache.low)];
return new Integer(i);
}
If the param is an integer between IntegerCache.low (defaulted to -128) and IntegerCache.high (calculated at runtime with minimum value 127) then a pre-allocated (cached) object is returned. So when you use 127 as parameter, you're ...
What's the difference between including files with JSP include directive, JSP include action and usi
...e /> over <%@ include > is:
<jsp:include /> allows to pass parameters
<jsp:include page="inclusion.jsp">
<jsp:param name="menu" value="objectValue"/>
</jsp:include>
which is not possible in <%@include file="somefile.jsp" %>
...
Create the perfect JPA entity [closed]
...* @return HashCode of entity identity
*/
int identityHashCode();
/**
* @param other
* Other entity
* @return true if identities of entities are equal
*/
boolean identityEquals(Entity<?> other);
}
Basic implementation for all Entities, simplifies Equals/Hashcode implementatio...
Using Build Flavors - Structuring source folders and build.gradle correctly
...to multiple hosts depending on the flavor
As before, you must include some params on your product flavor config field.
android {
productFlavors {
devel {
applicationId "zuul.com.android.devel"
buildConfigField 'String', 'HOST', '"http://192.168.1.34:3000"'
...
Difference between thread's context class loader and normal classloader
...ClassLoader() when you have to call a method that is missing a ClassLoader parameter.
When code from one class asks to load another class, the correct class loader to use is the same class loader as the caller class (i.e., getClass().getClassLoader()). This is the way things work 99.9% of the time ...
Deep null checking, is there a better way?
... }
if (stack.Count == 0 || !(stack.Peek().Expression is ParameterExpression))
throw new ApplicationException(String.Format("The expression '{0}' contains unsupported constructs.",
expression));
...