Add tasks for all the new languages

Task/Empty-string/8th/empty-string-1.8th

@@ -0,0 +1 @@
+"" var, str

Task/Empty-string/8th/empty-string-2.8th

@@ -0,0 +1 @@
+str @ s:len 0 n:= if ... then

Task/Empty-string/Apex/empty-string.apex

@@ -0,0 +1,2 @@
+String.isBlank(record.txt_Field__c);
+--Returns true if the specified String is white space, empty (''), or null; otherwise, returns false.

Task/Empty-string/Axe/empty-string.axe

@@ -0,0 +1,6 @@
+""→Str1
+!If length(Str1)
+ Disp "EMPTY",i
+Else
+ Disp "NOT EMPTY",i
+End

Task/Empty-string/FreeBASIC/empty-string.freebasic

@@ -0,0 +1,17 @@
+' FB 1.05.0 Win64
+
+Sub IsEmpty(s As String)
+   If Len(s) = 0 Then
+     Print "String is empty"
+   Else
+     Print "String is not empty"
+   End If
+End Sub
+
+Dim s As String  ' implicitly assigned an empty string
+IsEmpty(s)
+Dim t As String = "" ' explicitly assigned an empty string
+IsEmpty(t)
+Dim u As String = "not empty"
+IsEmpty(u)
+Sleep

Task/Empty-string/FutureBasic/empty-string.futurebasic

@@ -0,0 +1,13 @@
+include "ConsoleWindow"
+
+dim as Str255 s
+
+s = ""
+if s == "" then print "String is empty"
+if s[0] == 0 then print "String is empty"
+if len(s) == 0 then print "String is empty"
+
+s = "Hello"
+if s <> "" then print "String not empty."
+if s[0] then print "String not empty."
+if len(s) > 0 then print "String not empty."

Task/Empty-string/I/empty-string.i

@@ -0,0 +1,11 @@
+software {
+	var s = ""
+	
+	if len(s) = 0
+		print("Empty string!")
+	end
+	
+	if s != ""
+		print("Not an empty string!")
+	end
+}

Task/Empty-string/LFE/empty-string.lfe

@@ -0,0 +1,24 @@
+> (set str "")
+()
+> (length str)
+0
+> (=:= 0 (length str))
+true
+> (=:= 0 (length "apple"))
+false
+> (=:= "apple" "")
+false
+> (=/= "apple" "")
+true
+> (=:= str "")
+true
+> (=:= "apple" '())
+false
+> (=/= "apple" '())
+true
+> (=:= str '())
+true
+> (case str  ('() 'empty) ((cons head tail) 'not-empty))
+empty
+> (case "apple"  ('() 'empty) ((cons head tail) 'not-empty))
+not-empty

Task/Empty-string/Lasso/empty-string.lasso

@@ -0,0 +1,12 @@
+//Demonstrate how to assign an empty string to a variable.
+local(str = string)
+local(str = '')
+
+//Demonstrate how to check that a string is empty.
+#str->size == 0 	// true
+not #str->size		// true
+
+//Demonstrate how to check that a string is not empty.
+local(str = 'Hello, World!')
+#str->size > 0 		// true
+#str->size		// true

Task/Empty-string/Lingo/empty-string.lingo

@@ -0,0 +1,5 @@
+str = EMPTY -- same as: str = ""
+put str=EMPTY
+-- 1
+put str<>EMPTY
+-- 0

Task/Empty-string/NESL/empty-string.nesl

@@ -0,0 +1,5 @@
+my_empty_string = "";
+
+% To make sure it is empty, we can ask whether its length is equal to zero. %
+
+#my_empty_string == 0;

Task/Empty-string/Nim/empty-string.nim

@@ -0,0 +1,12 @@
+var x = ""
+
+if x == "":
+  echo "empty"
+if x != "":
+  echo "not empty"
+
+# Alternatively:
+if x.len == 0:
+  echo "empty"
+if x.len > 0:
+  echo "not empty"

Task/Empty-string/Oforth/empty-string.oforth

@@ -0,0 +1,2 @@
+"" isEmpty
+"" isEmpty not

Task/Empty-string/Phix/empty-string.phix

@@ -0,0 +1,9 @@
+string s
+
+s = ""                  -- assign an empty string
+
+if length(s)=0 then     -- string is empty
+if s="" then            -- string is empty
+
+if length(s)!=0 then    -- string is not empty
+if s!="" then           -- string is not empty

Task/Empty-string/Ring/empty-string.ring

@@ -0,0 +1,6 @@
+cStr = NULL # empty string
+if cStr = NULL
+   see "cstr is an empty string!" + nl
+else
+   see "cstr is not empty string!" + nl
+ok

Task/Empty-string/Sidef/empty-string-1.sidef

@@ -0,0 +1,2 @@
+var s = "";
+var s = String.new;

Task/Empty-string/Sidef/empty-string-2.sidef

@@ -0,0 +1,5 @@
+s == "";
+s.length == 0;
+s.is_empty;
+s ~~ /^\z/;
+s ~~ /\A\z/;

Task/Empty-string/Sidef/empty-string-3.sidef

@@ -0,0 +1,4 @@
+s != "";
+s.length > 0;
+s ~~ /./s;
+s !~ /^\z/;

Task/Empty-string/Swift/empty-string.swift

@@ -0,0 +1,6 @@
+var s = ""
+if s.isEmpty { // alternately, s == ""
+  println("s is empty")
+} else {
+  println("s is not empty")
+}

Task/Empty-string/Ursa/empty-string.ursa

@@ -0,0 +1,8 @@
+decl string s
+set s ""
+
+if (= s "")
+	out "empty" endl console
+else
+	out "not empty" endl console
+end if

Task/Empty-string/jq/empty-string-1.jq

@@ -0,0 +1 @@
+"" as $x

Task/Empty-string/jq/empty-string-2.jq

@@ -0,0 +1,3 @@
+s == ""
+# or:
+s|length == 0

Task/Empty-string/jq/empty-string-3.jq

@@ -0,0 +1,3 @@
+s != ""
+# or:
+s.length != 0 # etc.