Craftstack Academy (@cstackacademy)

SQLite error "no such column": usually missing quotes, plus 4 other causes

You want the visitors who went into the room called Vault, so you write: SELECT name FROM visitors WHERE room = Vault; and SQLite answers: Error: no such column: Vault But Vault isn't supposed to be

14h ago · 7 min readcraftstack.hashnode.dev

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')

You added a button and a few lines of JavaScript to make it do something. You click it, nothing happens, and the browser console says: Uncaught TypeError: Cannot read properties of null (reading 'addE

1d ago · 7 min readcraftstack.hashnode.dev

How to Read an Error Message: A 3-Step Method for Python, Java, JavaScript and SQL

Every beginner meets the same moment: you press Run, the screen fills with red text, and your first instinct is to close it and stare at your code instead. Don't. The error message is the most useful

1d ago · 6 min readcraftstack.hashnode.dev

Why Does 0.1 + 0.2 Not Equal 0.3 in Python?

Open Python and type this: print(0.1 + 0.2) You'd expect 0.3. Python gives you this: 0.30000000000000004 And it gets stranger: print(0.1 + 0.2 == 0.3) False If you're learning to code, this is the

2d ago · 4 min readcraftstack.hashnode.dev

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SQLite error "no such column": usually missing quotes, plus 4 other causes

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')

How to Read an Error Message: A 3-Step Method for Python, Java, JavaScript and SQL

Why Does 0.1 + 0.2 Not Equal 0.3 in Python?

Craftstack Academy

About

Available for

Craftstack Academy's blogs

SQLite error "no such column": usually missing quotes, plus 4 other causes

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')

How to Read an Error Message: A 3-Step Method for Python, Java, JavaScript and SQL

Why Does 0.1 + 0.2 Not Equal 0.3 in Python?

Craftstack Academy

About

Available for

Craftstack Academy's blogs

SQLite error "no such column": usually missing quotes, plus 4 other causes

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')

How to Read an Error Message: A 3-Step Method for Python, Java, JavaScript and SQL

Why Does 0.1 + 0.2 Not Equal 0.3 in Python?

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Craftstack Academy

About

Available for

Craftstack Academy's blogs

SQLite error "no such column": usually missing quotes, plus 4 other causes

Uncaught TypeError: Cannot read properties of null (reading 'addEventListener')

How to Read an Error Message: A 3-Step Method for Python, Java, JavaScript and SQL

Why Does 0.1 + 0.2 Not Equal 0.3 in Python?