How to convert a double to an int in Dart?
23
The following produces the below error:
int calc_ranks(ranks)
{
double multiplier = .5;
return multiplier * ranks;
}
The return type 'double' is not a 'int', as defined by the method 'calc_ranks'
How do I round/cast to an int?
dart
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
add a comment |
23
The following produces the below error:
int calc_ranks(ranks)
{
double multiplier = .5;
return multiplier * ranks;
}
The return type 'double' is not a 'int', as defined by the method 'calc_ranks'
How do I round/cast to an int?
dart
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
add a comment |
23
23
23
The following produces the below error:
int calc_ranks(ranks)
{
double multiplier = .5;
return multiplier * ranks;
}
The return type 'double' is not a 'int', as defined by the method 'calc_ranks'
How do I round/cast to an int?
dart
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
The following produces the below error:
int calc_ranks(ranks)
{
double multiplier = .5;
return multiplier * ranks;
}
The return type 'double' is not a 'int', as defined by the method 'calc_ranks'
How do I round/cast to an int?
dart
dart
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
asked Dec 26 '13 at 16:59
Todd ChamberyTodd Chambery
7432724
7432724
add a comment |
add a comment |
3 Answers
3
active
oldest
votes
30
Round it using the round() method:
int calc_ranks(ranks) {
double multiplier = .5;
return (multiplier * ranks).round();
}
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
add a comment |
18
You can simply use toInt() to convert a num to an int.
int calc_ranks(ranks)
{
double multiplier = .5;
return (multiplier * ranks).toInt();
}
Note that to do exactly the same thing you can use the Truncating division operator :
int calc_ranks(ranks) => ranks ~/ 2;
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
add a comment |
2
You can use any of the following.
double d = 20.5;
int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil(); // i = 21
int i = d.floor(); // i = 20
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
30
Round it using the round() method:
int calc_ranks(ranks) {
double multiplier = .5;
return (multiplier * ranks).round();
}
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
add a comment |
30
Round it using the round() method:
int calc_ranks(ranks) {
double multiplier = .5;
return (multiplier * ranks).round();
}
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
add a comment |
30
30
30
Round it using the round() method:
int calc_ranks(ranks) {
double multiplier = .5;
return (multiplier * ranks).round();
}
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
Round it using the round() method:
int calc_ranks(ranks) {
double multiplier = .5;
return (multiplier * ranks).round();
}
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
edited Jul 4 '14 at 12:06
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
answered Dec 26 '13 at 17:00
rightfoldrightfold
24k67192
24k67192
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
add a comment |
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
5
5
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
Or truncate it to int: return (multiplier * ranks).toInt(); (see api.dartlang.org/docs/channels/stable/latest/dart_core/…)
– Everton
Dec 26 '13 at 17:22
add a comment |
18
You can simply use toInt() to convert a num to an int.
int calc_ranks(ranks)
{
double multiplier = .5;
return (multiplier * ranks).toInt();
}
Note that to do exactly the same thing you can use the Truncating division operator :
int calc_ranks(ranks) => ranks ~/ 2;
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
add a comment |
18
You can simply use toInt() to convert a num to an int.
int calc_ranks(ranks)
{
double multiplier = .5;
return (multiplier * ranks).toInt();
}
Note that to do exactly the same thing you can use the Truncating division operator :
int calc_ranks(ranks) => ranks ~/ 2;
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
add a comment |
18
18
18
You can simply use toInt() to convert a num to an int.
int calc_ranks(ranks)
{
double multiplier = .5;
return (multiplier * ranks).toInt();
}
Note that to do exactly the same thing you can use the Truncating division operator :
int calc_ranks(ranks) => ranks ~/ 2;
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
You can simply use toInt() to convert a num to an int.
int calc_ranks(ranks)
{
double multiplier = .5;
return (multiplier * ranks).toInt();
}
Note that to do exactly the same thing you can use the Truncating division operator :
int calc_ranks(ranks) => ranks ~/ 2;
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
answered Dec 26 '13 at 17:38
Alexandre ArdhuinAlexandre Ardhuin
27.1k35273
27.1k35273
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
add a comment |
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
2
2
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
+1 for the operator.
– rightfold
Dec 26 '13 at 17:40
add a comment |
2
You can use any of the following.
double d = 20.5;
int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil(); // i = 21
int i = d.floor(); // i = 20
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
add a comment |
2
You can use any of the following.
double d = 20.5;
int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil(); // i = 21
int i = d.floor(); // i = 20
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
add a comment |
2
2
2
You can use any of the following.
double d = 20.5;
int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil(); // i = 21
int i = d.floor(); // i = 20
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
You can use any of the following.
double d = 20.5;
int i = d.toInt(); // i = 20
int i = d.round(); // i = 21
int i = d.ceil(); // i = 21
int i = d.floor(); // i = 20
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
answered Nov 25 '18 at 9:53
CopsOnRoadCopsOnRoad
4,56022124
4,56022124
add a comment |
add a comment |
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