add time-related slides

szabgab · Jun 11, 2021 · c9d3295 · c9d3295
1 parent 452f32e
commit c9d3295
Show file tree

Hide file tree

Showing 17 changed files with 104 additions and 29 deletions.
diff --git a/crystal/crystal.json b/crystal/crystal.json
@@ -19,6 +19,7 @@
         "regexes.md",
         "testing.md",
         "sqlite.md",
+        "time.md",
         "other.md"
     ]
 }
diff --git a/crystal/examples/my_time.out b/crystal/examples/my_time.out
diff --git a/crystal/examples/time/add_timespan.cr b/crystal/examples/time/add_timespan.cr
@@ -0,0 +1,5 @@
+now = Time.utc
+tomorrow = now + Time::Span.new(days: 1)
+puts now
+puts tomorrow
+
diff --git a/crystal/examples/time/add_timespan.out b/crystal/examples/time/add_timespan.out
@@ -0,0 +1,2 @@
+2021-06-11 10:06:03 UTC
+2021-06-12 10:06:03 UTC
diff --git a/crystal/examples/time/elapsed_time.cr b/crystal/examples/time/elapsed_time.cr
@@ -0,0 +1,11 @@
+t0 = Time.monotonic
+sleep 1
+t1 = Time.monotonic
+
+elapsed = t1-t0
+puts elapsed
+puts elapsed.seconds
+puts elapsed.total_seconds
+puts elapsed.total_milliseconds
+puts elapsed.microseconds
+puts elapsed.total_microseconds
diff --git a/crystal/examples/time/elapsed_time.out b/crystal/examples/time/elapsed_time.out
@@ -0,0 +1,6 @@
+00:00:01.004479308
+1
+1.004479308
+1004.479308
+4479
+1004479.308
diff --git a/crystal/examples/time/formatting.cr b/crystal/examples/time/formatting.cr
@@ -0,0 +1,3 @@
+time = Time.utc(2016, 2, 15, 10, 20, 30)
+puts time.to_s("%Y-%m-%d %H:%M:%S %:z")
+puts time.to_s("%Y-%m-%d")
diff --git a/crystal/examples/time/formatting.out b/crystal/examples/time/formatting.out
@@ -0,0 +1,2 @@
+2016-02-15 10:20:30 +00:00
+2016-02-15
diff --git a/crystal/examples/time/my_time.cr b/crystal/examples/time/my_time.cr
@@ -0,0 +1,3 @@
+now = Time.utc
+puts now
+puts now.year
diff --git a/crystal/examples/time/my_time.out b/crystal/examples/time/my_time.out
@@ -0,0 +1,2 @@
+2021-06-11 10:06:26 UTC
+2021
diff --git a/crystal/examples/time/sleep.cr b/crystal/examples/time/sleep.cr
@@ -0,0 +1,3 @@
+puts Time.monotonic
+sleep 1.5
+puts Time.monotonic
diff --git a/crystal/examples/time/sleep.out b/crystal/examples/time/sleep.out
@@ -0,0 +1,2 @@
+27.01:06:47.337685122
+27.01:06:48.841641088
diff --git a/crystal/examples/my_time.cr → crystal/examples/time/time_difference.cr b/crystal/examples/my_time.cr → crystal/examples/time/time_difference.cr
@@ -1,16 +1,5 @@
-now = Time.utc
-puts now
-puts now.year
-
-
 time1 = Time.utc(2016, 2, 15, 10, 20, 30)
 time2 = Time.utc(2016, 2, 16, 10, 20, 30)
 elapsed = time2 - time1  # Time::Span
 puts elapsed.days
 puts elapsed.total_seconds
-
-tomorrow = now + Time::Span.new(days: 1)
-puts tomorrow
-
-puts time1.to_s("%Y-%m-%d %H:%M:%S %:z")
-puts time1.to_s("%Y-%m-%d")
diff --git a/crystal/examples/time/time_difference.out b/crystal/examples/time/time_difference.out
@@ -0,0 +1,2 @@
+1
+86400.0
diff --git a/crystal/examples/try.cr b/crystal/examples/try.cr
@@ -1,3 +1,5 @@
+t = Time.monotonic
+puts typeof(t)
 
 # counter = Int32|Nil
 

diff --git a/crystal/other.md b/crystal/other.md
@@ -168,17 +168,6 @@ shards install
 ![](examples/use_yaml.cr)
 
 
-## Dates and Time
-{id: datetime}
-{i: Time}
-{i: Time::Span}
-
-* [Time](https://crystal-lang.org/api/Time.html)
-* [Time::Span](https://crystal-lang.org/api/Time/Span.html)
-
-![](examples/my_time.cr)
-![](examples/my_time.out)
-
 ## Testing with Spec
 {id: testing-with-spec}
 

diff --git a/crystal/time.md b/crystal/time.md
@@ -0,0 +1,60 @@
+# Time
+{id: time}
+
+
+## Dates and Time
+{id: datetime}
+{i: Time}
+{i: Time::Span}
+
+* [Time](https://crystal-lang.org/api/Time.html)
+* [Time::Span](https://crystal-lang.org/api/Time/Span.html)
+
+![](examples/time/my_time.cr)
+![](examples/time/my_time.out)
+
+## Sleep
+{id: sleep}
+{i: sleep}
+
+* Sleep in seconds.
+* It can get either and integer or a floating point number.
+
+
+![](examples/time/sleep.cr)
+![](examples/time/sleep.out)
+
+## Time difference or Time::Span
+{id: time-difference}
+
+![](examples/time/time_difference.cr)
+![](examples/time/time_difference.out)
+
+## Elapsed time
+{id: elapsed-time}
+{i: monotonic}
+{i: seconds}
+{i: total_seconds}
+{i: total_milliseconds}
+{i: microseconds}
+{i: total_microseconds}
+{i: sleep}
+
+* [Time::Span](https://crystal-lang.org/api/Time/Span.html)
+
+![](examples/time/elapsed_time.cr)
+![](examples/time/elapsed_time.out)
+
+## Timestamp formatting
+{id: timestamp-formatting}
+{i: to_s}
+
+![](examples/time/formatting.cr)
+![](examples/time/formatting.out)
+
+## Add timespan
+{id: add-timespan}
+
+![](examples/time/add_timespan.cr)
+![](examples/time/add_timespan.out)
+
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		2021-06-11 10:06:03 UTC
		2021-06-12 10:06:03 UTC