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Creating an enum from its name not value
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Data science time! April 2019 and salary with experience
The Ask Question Wizard is Live!What does the [Flags] Enum Attribute mean in C#?Cast int to enum in C#How can I represent an 'Enum' in Python?Create Generic method constraining T to an EnumHow do I enumerate an enum in C#?What is the preferred syntax for defining enums in JavaScript?How to get an enum value from a string value in Java?Get int value from enum in C#How to loop through all enum values in C#?Comparing Java enum members: == or equals()?
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Given the enumeration
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>, :delta<D>);
it's possible to easily set a variable by literally typing one of the names, or by passing one of the values to the enum object:
my $a = alpha;
my $b = NATO('B');
say $a; # ↪︎ alpha
say $b; # ↪︎ bravo
say $a.value; # ↪︎ A
say $b.value; # ↪︎ B
Besides using EVAL and given a Str that corresponds to one of the enums, how could I create $c to be an enum value equivalent to charlie?
my $x = 'charlie';
my $c = ...
enums perl6
asked 4 hours ago
guifaguifa
245111
add a comment |
Given the enumeration
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>, :delta<D>);
it's possible to easily set a variable by literally typing one of the names, or by passing one of the values to the enum object:
my $a = alpha;
my $b = NATO('B');
say $a; # ↪︎ alpha
say $b; # ↪︎ bravo
say $a.value; # ↪︎ A
say $b.value; # ↪︎ B
Besides using EVAL and given a Str that corresponds to one of the enums, how could I create $c to be an enum value equivalent to charlie?
my $x = 'charlie';
my $c = ...
enums perl6
asked 4 hours ago
guifaguifa
245111
add a comment |
Given the enumeration
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>, :delta<D>);
it's possible to easily set a variable by literally typing one of the names, or by passing one of the values to the enum object:
my $a = alpha;
my $b = NATO('B');
say $a; # ↪︎ alpha
say $b; # ↪︎ bravo
say $a.value; # ↪︎ A
say $b.value; # ↪︎ B
Besides using EVAL and given a Str that corresponds to one of the enums, how could I create $c to be an enum value equivalent to charlie?
my $x = 'charlie';
my $c = ...
enums perl6
asked 4 hours ago
guifaguifa
245111
Given the enumeration
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>, :delta<D>);
it's possible to easily set a variable by literally typing one of the names, or by passing one of the values to the enum object:
my $a = alpha;
my $b = NATO('B');
say $a; # ↪︎ alpha
say $b; # ↪︎ bravo
say $a.value; # ↪︎ A
say $b.value; # ↪︎ B
Besides using EVAL and given a Str that corresponds to one of the enums, how could I create $c to be an enum value equivalent to charlie?
my $x = 'charlie';
my $c = ...
enums perl6
enums perl6
asked 4 hours ago
guifaguifa
245111
asked 4 hours ago
guifaguifa
245111
asked 4 hours ago
guifaguifa
245111
asked 4 hours ago
guifaguifa
245111
asked 4 hours ago
guifaguifa
245111
245111
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
You can use indirect name lookup:
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>);
my $x = 'charlie';
my $c = ::($x);
say $c.value;
answered 4 hours ago
ugexeugexe
2,7571529
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
add a comment |
You can treat it as a Hash:
my $c = NATO::$x;
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
Ah, I needed the double colon. I definitely had tried just using theNATO$xto no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where::($x)won't make it obvious what's going on,Foo::$xwill make it crystal clear.
– guifa
3 hours ago
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use indirect name lookup:
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>);
my $x = 'charlie';
my $c = ::($x);
say $c.value;
answered 4 hours ago
ugexeugexe
2,7571529
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
add a comment |
You can use indirect name lookup:
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>);
my $x = 'charlie';
my $c = ::($x);
say $c.value;
answered 4 hours ago
ugexeugexe
2,7571529
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
add a comment |
You can use indirect name lookup:
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>);
my $x = 'charlie';
my $c = ::($x);
say $c.value;
answered 4 hours ago
ugexeugexe
2,7571529
You can use indirect name lookup:
enum NATO (:alpha<A>, :bravo<B>, :charlie<C>);
my $x = 'charlie';
my $c = ::($x);
say $c.value;
answered 4 hours ago
ugexeugexe
2,7571529
answered 4 hours ago
ugexeugexe
2,7571529
answered 4 hours ago
ugexeugexe
2,7571529
answered 4 hours ago
ugexeugexe
2,7571529
2,7571529
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
add a comment |
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
1
1
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
Thanks! (I figured with docs being offline it was a good time to start posting questions on SO)
– guifa
4 hours ago
add a comment |
You can treat it as a Hash:
my $c = NATO::$x;
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
Ah, I needed the double colon. I definitely had tried just using theNATO$xto no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where::($x)won't make it obvious what's going on,Foo::$xwill make it crystal clear.
– guifa
3 hours ago
add a comment |
You can treat it as a Hash:
my $c = NATO::$x;
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
Ah, I needed the double colon. I definitely had tried just using theNATO$xto no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where::($x)won't make it obvious what's going on,Foo::$xwill make it crystal clear.
– guifa
3 hours ago
add a comment |
You can treat it as a Hash:
my $c = NATO::$x;
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
You can treat it as a Hash:
my $c = NATO::$x;
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
answered 4 hours ago
Curt TilmesCurt Tilmes
2,2941721
2,2941721
Ah, I needed the double colon. I definitely had tried just using theNATO$xto no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where::($x)won't make it obvious what's going on,Foo::$xwill make it crystal clear.
– guifa
3 hours ago
add a comment |
Ah, I needed the double colon. I definitely had tried just using theNATO$xto no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where::($x)won't make it obvious what's going on,Foo::$xwill make it crystal clear.
– guifa
3 hours ago
Ah, I needed the double colon. I definitely had tried just using the
NATO$x to no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where ::($x) won't make it obvious what's going on, Foo::$x will make it crystal clear.– guifa
3 hours ago
Ah, I needed the double colon. I definitely had tried just using the
NATO$x to no avail. Thanks for a great alternate answer (it's longer than @ugexe 's, but for situations where ::($x) won't make it obvious what's going on, Foo::$x will make it crystal clear.– guifa
3 hours ago
add a comment |
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