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python max function using 'key' and lambda expression
...on the type of the objects (for example a string is always greater than an integer).
To modify the object before comparison, or to compare based on a particular attribute/index, you've to use the key argument.
Example 1:
A simple example, suppose you have a list of numbers in string form, but yo...
What is the difference between a var and val definition in Scala?
...d, and the object assigned to a var can. However, said object can have its internal state modified. For example:
class A(n: Int) {
var value = n
}
class B(n: Int) {
val value = new A(n)
}
object Test {
def main(args: Array[String]) {
val x = new B(5)
x = new B(6) // Doesn't work, be...
Android Webview - Completely Clear the Cache
...thod for clearCache() , recursive
//returns number of deleted files
static int clearCacheFolder(final File dir, final int numDays) {
int deletedFiles = 0;
if (dir!= null && dir.isDirectory()) {
try {
for (File child:dir.listFiles()) {
//first del...
Java 8: performance of Streams vs Collections
...(StreamVsVanilla.N)
public class StreamVsVanilla {
public static final int N = 10000;
static List<Integer> sourceList = new ArrayList<>();
static {
for (int i = 0; i < N; i++) {
sourceList.add(i);
}
}
@Benchmark
public List<Doub...
Remove commas from the string using JavaScript
...
To remove the commas, you'll need to use replace on the string. To convert to a float so you can do the maths, you'll need parseFloat:
var total = parseFloat('100,000.00'.replace(/,/g, '')) +
parseFloat('500,000.00'.replace(/,/g, ''));
...
How to implement a ConfigurationSection with a ConfigurationElementCollection
... <Site Id="123" />
<Lanes>
<Lane Id="1" PointId="north" Direction="Entry"/>
<Lane Id="2" PointId="south" Direction="Exit"/>
</Lanes>
</CustomApplicationConfig>
then you can use my implementation of configuration section so to...
初窥InnoDB的Memcached插件 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...
| c2 | varchar(1024) | YES | | NULL | |
| c3 | int(11) | YES | | NULL | |
| c4 | bigint(20) unsigned | YES | | NULL | |
| c5 | int(11) | YES | | NULL | |
+-------+---------------------+------+-----...
Change Checkbox value without triggering onCheckChanged
...the solution. mListener is an implementation of the OnCheckChangedListener interface, which was created by the programmer. My answer implies that the programmer maintained a reference to their own implementation - mListener.
– Shade
Jul 9 '14 at 8:20
...
Can I set background image and opacity in the same property?
...
Two methods:
Convert to PNG and make the original image 0.2 opacity
(Better method) have a <div> that is position: absolute; before #main and the same height as #main, then apply the background-image and opacity: 0.2; filter: alph...
Defining custom attrs
...e.g, "@color/my_color", "@layout/my_layout")
color
boolean
dimension
float
integer
string
fraction
enum - normally implicitly defined
flag - normally implicitly defined
You can set the format to multiple types by using |, e.g., format="reference|color".
enum attributes can be defined as follows:
...