range

Are upper bounds of indexed ranges always assumed to be exclusive?

由 有些话、适合烂在心里 提交于 2019-11-28 07:36:00
问题 So in Java, whenever an indexed range is given, the upper bound is almost always exclusive. From java.lang.String : substring(int beginIndex, int endIndex) Returns a new string that is a substring of this string. The substring begins at the specified beginIndex and extends to the character at index endIndex - 1 From java.util.Arrays : copyOfRange(T[] original, int from, int to) from - the initial index of the range to be copied, inclusive to - the final index of the range to be copied,

Doing a range lookup in C# - how to implement

由 心不动则不痛 提交于 2019-11-28 07:04:48
问题 I'm trying to understand how to implement the code found in thread by Jon Skeet: Doing a range lookup in C#? Can someone provide an setup example using something like: 1-10000, 10001-40000, 40000+ where is the first group returns a value of 1, 2, 3 respectively? I don't quite have a grasp of how that is done in this code. tx. public interface IRangeComparer<TRange, TValue> { /// <summary> /// Returns 0 if value is in the specified range; /// less than 0 if value is above the range; ///

about ruby range?

由 一笑奈何 提交于 2019-11-28 07:03:14
问题 like this range = (0..10) how can I get number like this: 0 5 10 plus five every time but less than 10 if range = (0..20) then i should get this: 0 5 10 15 20 回答1: Try using .step() to go through at a given step. (0..20).step(5) do |n| print n,' ' end gives... 0 5 10 15 20 As mentioned by dominikh, you can add .to_a on the end to get a storable form of the list of numbers: (0..20).step(5).to_a 回答2: Like Dav said, but add to_a: (0..20).step(5).to_a # [0, 5, 10, 15, 20] 回答3: The step method

Range is too large Python

由 有些话、适合烂在心里 提交于 2019-11-28 06:55:11
I'm trying to find the largest prime factor of the number x, Python gives me the error that the range is too large. I've tried using x range but I get an OverflowError: Python int too large to convert to C long x = 600851475143 maxPrime = 0 for i in range(x): isItPrime = True if (x%i == 0): for prime in range(2,i-1): if (i%prime == 0): isItPrime = False if (isItPrime == True): if (i > maxPrime): maxPrime = i; print maxPrime In old (2.x) versions of Python, xrange can only handle Python 2.x int s, which are bound by the native long integer size of your platform. Additionally, range allocates a

Range as dictionary key in Python

由 試著忘記壹切 提交于 2019-11-28 06:50:49
So, I had an idea that I could use a range of numbers as a key for a single value in a dictionary. I wrote the code bellow, but I cannot get it to work. Is it even possible? stealth_roll = randint(1, 20) # select from a dictionary of 4 responses using one of four ranges. ## not working. stealth_check = { range(1, 6) : 'You are about as stealthy as thunderstorm.', range(6, 11) : 'You tip-toe through the crowd of walkers, while loudly calling them names.', range(11, 16) : 'You are quiet, and deliberate, but still you smell.', range(16, 20) : 'You move like a ninja, but attracting a handful of

iphone, using an array to define in core-plot range

由 心已入冬 提交于 2019-11-28 06:42:43
问题 I'm almost done with a core-plot graph I've been working on for a couple of day now. There is something I am still not able to do (and I cannot find documentation on this), is to change the x axis labels to what I need. Today, I have an x axis with integer label beeing displayed every 5 values: "5 10 15...", I need to have labels coresponding to the last 24 hours. For instance if it's 15:00, I would need labels like: "15 16 17 ... 23 0 1 2 .. 15" I was thinking of using a NSArray for this and

Enumerable.Range implementation

由 ﹥＞﹥吖頭↗ 提交于 2019-11-28 06:36:44
问题 What is the precise implementation of Enumerable.Range in .Net; preferable .Net 4? Is it a yielded for-loop? A custom implementation (IEnumerable, IEnumerator) or? 回答1: The accepted answer on this question should give you the answer: public static class Enumerable { public static IEnumerable<int> Range(int start, int count) { var end = start + count; for(var current = start; current < end; ++current) { yield return current; } } } This isn't the exact code, as there is a lot of error checking

Range Only Works When Called from the Referenced Worksheet [duplicate]

由 女生的网名这么多〃 提交于 2019-11-28 06:33:07
问题 This question already has answers here : Excel VBA, getting range from an inactive sheet (3 answers) Closed 12 months ago . VBA/Programming newbie here! I've got a macro assigned to two buttons, each on a different worksheet: "Print Page 1" and "Optimization". The macro takes information from the first to know how many times to copy a range the second. When called while "Optimization" is active, the code works perfectly, but when called with the "Print Page 1" worksheet active, a "1004 error:

Skip over a value in the range function in python

由 99封情书 提交于 2019-11-28 06:16:45
What is the pythonic way of looping through a range of numbers and skipping over one value? For example, the range is from 0 to 100 and I would like to skip 50. Edit: Here's the code that I'm using for i in range(0, len(list)): x= listRow(list, i) for j in range (#0 to len(list) not including x#) ... njzk2 You can use any of these: # Create a range that does not contain 50 for i in [x for x in xrange(100) if x != 50]: print i # Create 2 ranges [0,49] and [51, 100] (Python 2) for i in range(50) + range(51, 100): print i # Create a iterator and skip 50 xr = iter(xrange(100)) for i in xr: print i

Equivalent to exclusion constraint composed of integer and range

由 风格不统一 提交于 2019-11-28 06:04:00
问题 I need to have something equivalent to this exclusion constraint drop table if exists t; create table t ( i int, tsr tstzrange, exclude using gist (i with =, tsr with &&) ); ERROR: data type integer has no default operator class for access method "gist" HINT: You must specify an operator class for the index or define a default operator class for the data type. I guess the problem is obvious from the error message. How to do it? 回答1: You need to install the additional module btree_gist to make
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