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Creating an array of objects in Java
...jects ("heap"). So the analogous C++ code would be A **a = new A*[4]; for (int i = 0; i < 4; ++i) { a[i] = new A(); }.
– Vsevolod Golovanov
Apr 3 '16 at 13:56
...
How to return 2 values from a Java method?
...'t use really meaningful names):
final class MyResult {
private final int first;
private final int second;
public MyResult(int first, int second) {
this.first = first;
this.second = second;
}
public int getFirst() {
return first;
}
public int g...
grep a tab in UNIX
...le '\t' , literal TABs (i.e. the ones that look like whitespace) are often converted to SPC when copypasting ...
– plijnzaad
Mar 7 '17 at 11:39
...
Java code for getting current time [duplicate]
...a.time
ZonedDateTime zdt = ZonedDateTime.now();
If needed for old code, convert to java.util.Date. Go through at Instant which is a moment on the timeline in UTC.
java.util.Date date = java.util.Date.from( zdt.toInstant() );
Time Zone
Better to specify explicitly your desired/expected time zo...
Android: Want to set custom fonts for whole application not runtime
...mple:
public class CustomButton extends Button {
private final static int ROBOTO = 0;
private final static int ROBOTO_CONDENSED = 1;
public CustomButton(Context context) {
super(context);
}
public CustomButton(Context context, AttributeSet attrs) {
super(contex...
Escaping ampersand in URL
... must be percent-encoded. Percent-encoding
a reserved character involves converting the character to its
corresponding byte value in ASCII and then representing that value as
a pair of hexadecimal digits. The digits, preceded by a percent sign
("%") which is used as an escape character, are ...
Detect network connection type on Android
... subType
* @return
*/
public static boolean isConnectionFast(int type, int subType){
if(type==ConnectivityManager.TYPE_WIFI){
return true;
}else if(type==ConnectivityManager.TYPE_MOBILE){
switch(subType){
case TelephonyManager.NETWORK...
What do people find difficult about C pointers? [closed]
...ople have some pretty fundemental issues when getting their heads around pointers and pointer arithmetic.
29 Answers
...
using lodash .groupBy. how to add your own keys for grouped output?
...rt groupBy from "lodash/fp/groupBy";
const map = require('lodash/fp/map').convert({ 'cap': false });
const result = flow(
groupBy('color'),
map((users, color) => ({color, users})),
tap(console.log)
)(input)
Where input is an array that you want to convert.
...
What's the best practice to round a float to 2 decimals? [duplicate]
...am d
* @param decimalPlace
* @return
*/
public static float round(float d, int decimalPlace) {
BigDecimal bd = new BigDecimal(Float.toString(d));
bd = bd.setScale(decimalPlace, BigDecimal.ROUND_HALF_UP);
return bd.floatValue();
}
You need to decide if you want to round up or down. In m...