What do you want to save?
Add Code snippet
New code examples
-
TypeScript 2022-03-25 01:30:13
?? Operator in TypeScript
"Nullish Coalescing" If the left operand is null or undefined, the ?? expression evaluates to the right operand: null ?? "n/a" // "n/a" undefined ?? "n/a" // "n/a" Otherwise, the ?? expression evaluat... Add solution -
Dart 2022-03-05 20:35:12
dart nullable variable
// type? variable; variable can be null. int a?; // a can be null e1?.[e2] // null if e1 is null; otherwise it’s e1[e2] /* This requires the 'non-nullable' language feature to be enabled. In pubspec.yaml, set the minimum SDK constraint to 2.... Add solution -
SQL 2022-03-05 12:00:02
difference between left join and left outer join in postgresql
-- LEFT OUTER JOIN is equivalent to LEFT JOIN -- b.VALUE1 is null when ID not in table2 (idem for c.VALUE1 in table3) SELECT a.ID, a.NAME, b.VALUE1, c.VALUE1 FROM table1 a LEFT OUTER JOIN table2 b ON a.ID = b.ID LEFT OUTER JOIN table3 c ON a.ID = c.I... Add solution -
Other 2022-02-28 06:10:07
Trying to get property of non-object
Try var_dump($this->container); and die(); If that's an object, try var_dump($this->container->view);, then die(); Basically, keep vardumping each step until you get to whatever is not an object. More often than nut something is null. Add solution -
Dart 2022-02-26 20:35:02
dart null aware operators
int minVal = (a < b) ? a : b; // if(a < b) {minVal = a;} else {minVal = b;} var x = y ?? z; // assign y to x if y is not null, else z var x ??= y; // assign y to x only if x is null myObject?.myProp // (myObject != null) ? myObject.m... Add solution -
Java 2022-02-21 18:05:17
admob preload ad
** * Created by Kirk-Patrick Brown on 10/26/2017. */ public class AdManager { private static AdManager singleton; public AdManager() { } /*** * returns an instance of this class. if singleton is null create an instance * else return the current ins... Add solution
Best helpers
Tim7823
+5
Bumba Clat
+5
Relle
+5
Stephen Raj
+5
Bryzzeij
+5
Jihed gasmi
+5
Xiaoyaolnm
+5
Dee doo
+5