大约有 15,000 项符合查询结果（耗时：0.0286秒） [XML]
How to make an app's background image repeat
...a hack to prevent ListViews from going black while scrolling.
drawable/app_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/actual_pattern_image"
android:tileMode="repeat" /...
How do I check if a type is a subtype OR the type of an object?
...ass A
{
}
public class B : A
{
}
public class MyClass
{
private Type _helperType;
public Type HelperType
{
get { return _helperType; }
set
{
var testInstance = (A)Activator.CreateInstance(value);
if (testInstance==null)
t...
Finding sum of elements in Swift array
...parameter:
extension Sequence {
func sum<T: AdditiveArithmetic>(_ keyPath: KeyPath<Element, T>) -> T { reduce(.zero) { $0 + $1[keyPath: keyPath] } }
}
Usage:
struct Product {
let id: String
let price: Decimal
}
let products: [Product] = [.init(id: "abc", price: 21.9),
...
What is the difference between JavaConverters and JavaConversions in Scala?
...onversions in Scala are Scope based so if you don't import JavaConversions._, conversions will not occur so you have the control on what is converted. If you place the import the right way (only when needed), you have full control on where the conversion is done.
– David
...
.trim() in JavaScript not working in IE
...
https://developer.mozilla.org/En/Core_JavaScript_1.5_Reference/Global_Objects/String/Trim
This is a pretty recent addition to javascript, and its not supported by IE.
share
|
...
if checkbox is checked, do this
...checked
here is my algorithm...
create a global variable lets say var check_holder
check_holder has 3 states
undefined state
0 state
1 state
If the checkbox is clicked,
$(document).on("click","#check",function(){
if(typeof(check_holder)=="undefined"){
//this means that it is th...
Is it possible to decompile a compiled .pyc file into a .py file?
...ashed in Python 3.6 in lib\site-packages\unpyclib\applcation.py with print __copyright -- why is it using the Python 2.7 version of print without parenthesis?
– David Ching
Jun 7 '18 at 23:46
...
Why does this Java code compile?
...lps us again, these are JVM instruction generated for this code:
0: iconst_1 //load constant to stack
1: dup //duplicate it
2: istore_1 //set x to constant
3: istore_1 //set x to constant
more like:
int x = 1;
x = 1;
Here is no reason to throw undefined reference error. There ...
Regex: ignore case sensitivity
... does show the correct folders. Any idea why?
– alpha_989
Jul 1 '18 at 21:19
Here I am trying to find all the folders ...
Calculate the median of a billion numbers
...ian of medians and quickselect algorithms. en.wikipedia.org/wiki/Selection_algorithm
– Dimath
Jan 9 '13 at 2:32
...