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How do I represent a hextile/hex grid in memory?

...-> axial conversion for rounding which confuses me also as it doesn't really explain why you need to when axial can just technically be cube all the time if you just ignore the s variable, why do both types exist at all. – WDUK Aug 20 at 23:54 ...
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Reading binary file and looping over each byte

...hile byte != "": # Do stuff with byte. byte = f.read(1) finally: f.close() Python 2.5-2.7 with open("myfile", "rb") as f: byte = f.read(1) while byte != "": # Do stuff with byte. byte = f.read(1) Note that the with statement is not available in versio...
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function

... The first version is preferable: It works for all kinds of keys, so you can, for example, say {1: 'one', 2: 'two'}. The second variant only works for (some) string keys. Using different kinds of syntax depending on the type of the keys would be an unnecessary inconsisten...
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Transposing a 2D-array in JavaScript

... array[0].map((_, colIndex) => array.map(row => row[colIndex])); map calls a provided callback function once for each element in an array, in order, and constructs a new array from the results. callback is invoked only for indexe...
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How to copy an object in Objective-C

...deep, logical copy. In this, we make a copy of the object, but without actually doing it bit by bit - we want an object that behaves the same for all intents and purposes, but isn't (necessarily) a memory-identical clone of the original - the Objective C manual calls such an object "functionally ind...
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腾讯Tencent开源框架介绍(持续更新) - 开源 & Github - 清泛网 - 专注C/C++及内核技术

...h> #include <stdio.h> #include <stdlib.h> #include <queue> #include "co_routine.h" using namespace std; /** * 本实例是对条件变量的展示,其作用类似于pthread_cond_wait */ struct stTask_t { int id; }; struct stEnv_t { stCoCond_t* cond; queue<stTask_t*> task_queue...
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Cannot set property 'innerHTML' of null

...tag are trying to access an element having id hello even before it has actually been rendered in the DOM. So obviously, JavaScript failed to see the element and hence you end up seeing the null reference error. How can you make it work as before? You want to show the "hi" message on the page a...
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Does Java have a HashMap with reverse lookup?

...to be one of the implementations of BidiMap. As a mathematician, I would call this kind of structure a bijection. share | improve this answer | follow | ...
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Programmatically set left drawable in a TextView

... No, setCompoundDrawablesWithIntrinsicBounds(int, int, int, int) is API Levet 3 from your own link... – BrainCrash Jul 4 '14 at 14:34 add a comment  |...
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How to measure time taken by a function to execute

...ction you're measuring time for var t1 = performance.now() console.log("Call to doSomething took " + (t1 - t0) + " milliseconds.") NodeJs: it is required to import the performance class Using console.time: (non-standard) (living standard) console.time('someFunction') someFunction() // W...