product-metrics
Frameworks for feature metricsThere are two frameworks that I have known to be useful to track feature success:
Dave McClure’s Pirate MetricsAcquisiti
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star-schema
Table Designhttps://github.com/yoosuf/Messenger
ConstraintsKey words
NOT NULL
Ensures that a column cannot have a NULL value
UNIQUE
Ensures that all
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Distributed-Systems
Everything is a trade off!
Performance vs scalabilityA service is scalable if it results in increased performance in a manner proportional to resource
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Object-Oriented_Design
Multiple Inheritance12345678910111213141516class Father(): def skills(self): print("gardening,programming")class Mother(): def skills(self):
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Multiprocessing-Multithreading.md
OverviewBoth multiprocessing and multithreading both are ways to achieve multitasking
Multithreading
will share the same address space (global variabl
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Dynamic-Programming
general strategy
Start with the recursive backtracking solution
Optimize by using a memoization table (top-down[3] dynamic programming)
Remove the nee
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Binary-Search
binary searchhttps://blog.csdn.net/itsyarkee/article/details/6852338http://www.cnblogs.com/grandyang/p/6854825.htmlhttps://leetcode.com/problems/minim
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Advanced-Topics
AlgorithmTopological SortDijkstra’s Algorithm
Dijkstra’s algorithm is an algorithm for finding the shortest paths between nodes in a graph,
Dijkstra
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Graph-Algorithms
Topological orderingDefinitionA topological ordering of a directed graph G is a a labelling f of G’s nodes such that:
the f(v)’s are the set {1, 2, …
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Tricks-and-Tips
Time Complexity
get sublist/substring
continuous substring: O(N^2)
any substring/sublist without changing order O(2^N) ?
#Tips:
Bug-free
consider
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