Counter and Theme Toggle - K Typing CST Test
Loading…
Counter and Theme Toggle — K Code
Demonstrates a simple counter with theme toggling using K variables and functional style.
count:0
isDark:0
updateUI:{
'Counter: ', string count
'Theme: ', (if[isDark; 'Dark'; 'Light'])
}
increment:{
count+:1
updateUI[]
}
decrement:{
count-:1
updateUI[]
}
reset:{
count:0
updateUI[]
}
toggleTheme:{
isDark:1-isDark
updateUI[]
}
/ Simulate actions
updateUI[]
increment[]
increment[]
toggleTheme[]
decrement[]
reset[]K Language Guide
K is a high-performance, array-oriented programming language designed for financial and analytical applications. It provides concise syntax for working with large datasets, time-series data, and complex calculations, and is often used in conjunction with the kdb+ database system.
Primary Use Cases
- ▸Financial analytics and trading systems
- ▸Real-time market data processing
- ▸Time-series data analysis
- ▸High-performance data querying
- ▸Integration with kdb+ database for analytics
Notable Features
- ▸Array-oriented and vectorized operations
- ▸Extremely concise and symbolic syntax
- ▸Integration with kdb+ for database operations
- ▸Supports functional and tacit programming styles
- ▸Optimized for high-performance numeric and temporal calculations
Origin & Creator
Developed by Arthur Whitney in the early 1990s, as a successor to APL and influenced by the language Q.
Industrial Note
K is primarily used in the financial industry, especially for high-frequency trading, quantitative research, and time-series analysis.