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< > BotCompany Repo | #1000628 // first function

JavaX fragment (include) [tags: use-pretranspiled]

Transpiled version (9916L) is out of date.

ifndef NoGenericFunctions
static O first(O list) {
  ret first((Iterable) list);
}
endifndef

static <A> A first(L<A> list) {
  return empty(list) ? null : list.get(0);
}

static <A> A first(A[] bla) {
  ret bla == null || bla.length == 0 ? null : bla[0];
}

static <A, B> Pair<A, B> first(Map<A, B> map) {
  ret mapEntryToPair(first(entrySet(map)));
}

static <A, B> Pair<A, B> first(MultiMap<A, B> mm) {
  if (mm == null) null;
  var e = first(mm.data.entrySet());
  if (e == null) null;
  ret pair(e.getKey(), first(e.getValue());
}

ifclass IterableIterator
static <A> A first(IterableIterator<A> i) {
  ret first((Iterator<A>) i);
}
endif

static <A> A first(Iterator<A> i) {
  ret i == null || !i.hasNext() ? null : i.next();
}

static <A> A first(Iterable<A> i) {
  if (i == null) ret null;
  Iterator<A> it = i.iterator();
  ret it.hasNext() ? it.next() : null;
}

static Char first(S s) { ret empty(s) ? null : s.charAt(0); }
static Char first(CharSequence s) { ret empty(s) ? null : s.charAt(0); }

ifclass Pair
static <A, B> A first(Pair<A, B> p) {
  ret p == null ? null : p.a;
}
endif

ifclass T3
static <A, B, C> A first(T3<A, B, C> t) {
  ret t == null ? null : t.a;
}
endif

static Byte first(byte[] l) { ret empty(l) ? null : l[0]; }
static Double first(double[] l) { ret empty(l) ? null : l[0]; }

ifclass IntBuffer
static int first(IntBuffer buf) {
  ret buf.get(0);
}
endif

ifclass ByteBuffer
static byte first(ByteBuffer buf) {
  ret buf.get(0);
}
endif

static <A> A first(A[] l, IF1<A, Bool> pred) {
  ret firstThat(l, pred);
}

static <A> A first(Iterable<A> l, IF1<A, Bool> pred) {
  ret firstThat(l, pred);
}

static <A> A lambdaMapLike first(IF1<A, Bool> pred, Iterable<A> l) {
  ret firstThat(pred, l);
}

ifclass AppendableChain
static <A> A first(AppendableChain<A> a) {
  ret a == null ? null : a.element;
}
endif

ifclass IMultiSet
static <A> A first(IMultiSet<A> a) {
  ret a == null ?: first(a.keySet());
}
endif

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Comments [hide]

ID Author/Program Comment Date
874 #1000610 Edit suggestion:
!636
!629

main {
static Object androidContext;
static String programID;

public static void main(String[] args) throws Exception {
static Object first(Object list) {
return ((List) list).isEmpty() ? null : ((List) list).get(0);
}

}}
2015-08-19 22:48:33  delete 
755 #1000604 (pitcher) 2015-08-19 17:00:56

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Snippet ID: #1000628
Snippet name: first function
Eternal ID of this version: #1000628/23
Text MD5: 41745984bff5cc64ae9297e59889a84d
Author: stefan
Category:
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2023-02-12 20:41:08
Source code size: 2040 bytes / 94 lines
Pitched / IR pitched: No / No
Views / Downloads: 1422 / 3175
Version history: 22 change(s)
Referenced in: [show references]