separate json chapter

crystal/crystal.json

@@ -18,6 +18,7 @@
         "classes.md",
         "regexes.md",
         "testing.md",
+        "json.md",
         "sqlite.md",
         "time.md",
         "other.md"

crystal/examples/assign_to_variable.cr

@@ -0,0 +1,8 @@
+x = "one"
+p! x
+p! typeof(x)
+
+x = 1
+p! x
+p! typeof(x)
+

crystal/examples/assign_to_variable.out

@@ -0,0 +1,4 @@
+x # => "one"
+typeof(x) # => String
+x # => 1
+typeof(x) # => Int32

crystal/examples/hashes/hash_and_types.cr

@@ -0,0 +1,7 @@
+person = {
+    "name" => "Foo Bar",
+    "number" => 42,
+}
+p! person
+puts typeof(person) # Hash(String, Int32 | String)
+

crystal/examples/hashes/hash_and_types.out

@@ -0,0 +1,2 @@
+person # => {"name" => "Foo Bar", "number" => 42}
+Hash(String, Int32 | String)

crystal/examples/try.cr

@@ -1,16 +1,3 @@
-# counter = Int32|Nil
-
-# counter = 2
-# puts counter + 1
-
-
-# person = {
-#     "name" => "Foo Bar",
-#     "number" => 42,
-# }
-# p! person
-# puts typeof(person) # Hash(String, Int32 | String)
-
 # joe = {} of String => Int32 | String
 # joe["name"] = "Joe"
 # joe["number"] = 23

crystal/hashes.md

@@ -21,3 +21,10 @@
 ![](examples/hashes/empty_hash_string_int32.cr)
 
 ![](examples/hashes/empty_hash_string_int32_bool.cr)
+
+## Hash and types
+{id: hash-and-types}
+
+![](examples/hashes/hash_and_types.cr)
+![](examples/hashes/hash_and_types.out)
+

crystal/json.md

@@ -0,0 +1,39 @@
+# JSON
+{id: json}
+
+## JSON (to_json, parse)
+{id: parse-json}
+{i: json}
+{i: to_json}
+{i: parse}
+
+* Round trip with JSON
+* Have to `require "json"` for the method to be added.
+
+![](examples/json/json.cr)
+
+## JSON to NamedTuple
+{id: json-to-namedtuple}
+{i: NamedTuple}
+{i: from_json}
+{i: JSON}
+
+![](examples/json/json_to_named_tuple.cr)
+
+## Reading a JSON file
+{id: reading-a-json-file}
+{i: NamedTuple}
+
+![](examples/json/math.json)
+![](examples/json/read_math_json.cr)
+
+## JSON to Array
+{id: json-to-array}
+{i: JSON}
+{i: from_json}
+
+![](examples/json/json_to_array.cr)
+
+
+
+

crystal/other.md

@@ -11,23 +11,8 @@
 ## No type-checking?
 {id: no-typechecking}
 
-```
-x = "one"
-x = 1
-p! x
-p! typeof(x)
-```
-
-## JSON (to_json, parse)
-{id: json}
-{i: json}
-{i: to_json}
-{i: parse}
-
-* Round trip with JSON
-* Have to `require "json"` for the method to be added.
-
-![](examples/json.cr)
+![](examples/assign_to_variable.cr)
+![](examples/assign_to_variable.out)
 
 ## HTTP Client
 {id: http-client}
@@ -192,35 +177,11 @@ crystal spec
 
 ![](examples/gravatar.cr)
 
-## JSON to NamedTuple
-{id: json-to-namedtuple}
-{i: NamedTuple}
-{i: from_json}
-{i: JSON}
-
-![](examples/json_to_named_tuple.cr)
-
-## Reading a JSON file
-{id: reading-a-json-file}
-{i: NamedTuple}
-
-![](examples/math.json)
-![](examples/read_math_json.cr)
-
-
 ## Try Crystal
 {id: try}
 
 ![](examples/try.cr)
 
-## JSON to Array
-{id: json-to-array}
-{i: JSON}
-{i: from_json}
-
-![](examples/json_to_array.cr)
-
-
 ## Check if variable is nil?
 {id: nil}