Mistakes

These pages collect the mistakes that have actually hurt people — including the people who wrote the library. Each entry shows the wrong pattern, the right one, and (where applicable) a live playground you can tinker with.

Getting the current time

• Getting the Current Time Mistakes

Parsing

• Parsing Date and Time Mistakes

Formatting

• Formatting Date and Time Mistakes
• Formatting Relative Time Mistakes

Arithmetic

• Date Arithmetic Mistakes
• Duration Mistakes

Comparison and validation

• Date Comparison Mistakes
• Date Validation Mistakes

Zoned operations

• Zoned Date Operations Mistakes

Conversion

• Type Conversion Mistakes

Intervals

• Interval Operations Mistakes