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Debugging "Object reference not set to an instance of an object." 😬

Sajeetharan sajeetharan

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Debugging "Object reference not set to an instance of an object." 😬
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@laughinghan
laughinghan / Every possible TypeScript type.md
Last active Aug 22, 2022
Diagram of every possible TypeScript type
View Every possible TypeScript type.md

Hasse diagram of every possible TypeScript type

  • any: magic, ill-behaved type that acts like a combination of never (the proper [bottom type]) and unknown (the proper [top type])
    • Anything except never is assignable to any, and any is assignable to anything at all.
    • Identities: any & AnyTypeExpression = any, any | AnyTypeExpression = any
    • Key TypeScript feature that allows for [gradual typing].
  • unknown: proper, well-behaved [top type]
    • Anything at all is assignable to unknown. unknown is only assignable to itself (unknown) and any.
    • Identities: unknown & AnyTypeExpression = AnyTypeExpression, unknown | AnyTypeExpression = unknown
  • Prefer over any whenever possible. Anywhere in well-typed code you're tempted to use any, you probably want unknown.
@notthetup
notthetup / publicspeaking.md
Last active Oct 29, 2017
Public Speaking Resources
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Online Resources on Public Speaking

@nberardi
nberardi / GuidGenerator.cs
Created Sep 21, 2012
TimeUUID Generator for .NET
View GuidGenerator.cs
using System;
namespace FluentCassandra
{
/// <summary>
/// Used for generating UUID based on RFC 4122.
/// </summary>
/// <seealso href="http://www.ietf.org/rfc/rfc4122.txt">RFC 4122 - A Universally Unique IDentifier (UUID) URN Namespace</seealso>
public static partial class GuidGenerator
{