Join Reynald Adolphe for an in-depth discussion in this video Checking for null, part of C# Best Practices for Developers.
- [Instructor] One of the first lessons I've learned…when developing, and I remember my mentor was telling me…this with a very deep voice, and there should have been…dramatic music playing in the background because…he sounded so serious.…And it was to always, always, always check for null.…Always.…And I've always remembered that.…And when we've had to check for null,…we've had to write a little bit of extra syntax,…but now we have the Null Conditional Operator.…And let me show you exactly what I mean.…You may have noticed that in our Actor Class,…there were a couple of areas, such as over here,…where we are using this question mark.…
But what's happening is that it's checking to see…if value is null, and if it is,…it's not going to try to invoke Trim.…Now what's nice about that is that it prevents the code…from just blowing up on you,…from a system exception error happening.…And let me go ahead and demonstrate what I'm talking about.…I'll hop on over to our program file under Prestige.Biz…and let's say that were going to write out…
Author
Released
6/5/2018- Naming and handling classes
- Running a unit test
- Using constructors
- Naming and handling methods, fields, and properties
- Using properties correctly
- Managing objects efficiently
- Common design patterns as best practices
Skill Level Intermediate
Duration
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Introduction
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Welcome1m 9s
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1. Best Practices: An Overview
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Best practices defined1m 1s
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When to use it1m 8s
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Getting the team to follow1m 10s
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2. Naming and Handling Classes
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Project setup overview1m 13s
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Set up the business layer2m 18s
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Running a unit test3m 13s
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Using constructors3m 9s
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Unit testing constructors4m 30s
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Namespaces2m 48s
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Static classes3m 10s
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Unit testing static classes4m 20s
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Using a singleton2m 6s
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3. Naming and Handling Methods, Fields, and Properties
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Method overloading5m 16s
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Unit testing with parameters2m 54s
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Method chaining4m 7s
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Using properties correctly2m 11s
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Using properties demo4m 29s
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Auto-implemented properties1m 33s
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4. Managing Objects Efficiently
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Initializing objects3m 54s
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Related objects needed once4m 19s
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Checking for null3m 6s
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5. More Best Practices Resources
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Conclusion
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Next steps37s
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Video: Checking for null