Data commit

Task/Determine-if-a-string-is-numeric/Ruby/determine-if-a-string-is-numeric-1.rb

@@ -0,0 +1,9 @@
+def is_numeric?(s)
+  begin
+    Float(s)
+  rescue
+    false # not numeric
+  else
+    true # numeric
+  end
+end

Task/Determine-if-a-string-is-numeric/Ruby/determine-if-a-string-is-numeric-2.rb

@@ -0,0 +1,3 @@
+def is_numeric?(s)
+    !!Float(s) rescue false
+end

Task/Determine-if-a-string-is-numeric/Ruby/determine-if-a-string-is-numeric-3.rb

@@ -0,0 +1,3 @@
+def is_numeric?(s)
+    !!Float(s, exception: false)
+end

Task/Determine-if-a-string-is-numeric/Ruby/determine-if-a-string-is-numeric-4.rb

@@ -0,0 +1,4 @@
+strings = %w(0 0.0 -123 abc 0x10 0xABC 123a -123e3 0.1E-5 50e)
+strings.each do |str|
+  puts "%9p => %s" % [str, is_numeric?(str)]
+end