range

问题 I want to see if a variable is between a range of values, for example if x is between 20 and 30 return true. What's the quickest way to do this (with any C based language)? It can obviously be done with a for loop: function inRange(x, lowerbound, upperbound) { for(i = lowerbound; i < upperbound; i++) { if(x == i) return TRUE; else return FALSE; } } //in the program if(inRange(x, 20, 30)) //do stuff but it's awful tedious to do if(inRange(x, 20, 30)) is there simpler logic than this that doesn

问题 This question already has answers here : Decrementing ranges in Haskell (3 answers) Closed 4 years ago . Why in Haskell is not working range downto without step [7..1] => [] but working only this [7,6..1] => [7,6,5,4,3,2,1] 回答1: 3.10. Arithmetic sequences [...] Arithmetic sequences satisfy these identities: [...] [ e1..e3 ] = enumFromTo e1 e3 [...] 6.3.4 The Enum Class For the types Int and Integer, the enumeration functions have the following meaning: [...] The sequence enumFromTo e1 e3 is

问题 This question already has answers here : Decrementing ranges in Haskell (3 answers) Closed 4 years ago . Why in Haskell is not working range downto without step [7..1] => [] but working only this [7,6..1] => [7,6,5,4,3,2,1] 回答1: 3.10. Arithmetic sequences [...] Arithmetic sequences satisfy these identities: [...] [ e1..e3 ] = enumFromTo e1 e3 [...] 6.3.4 The Enum Class For the types Int and Integer, the enumeration functions have the following meaning: [...] The sequence enumFromTo e1 e3 is

问题 I have a table defining ranges, e.g.: START | END | MAP 1 | 10 | A 11 | 15 | B ... how do I query into that table so the result will be ID | MAP 1 | A 2 | A 3 | A 4 | A 5 | A 6 | A 7 | A 8 | A 9 | A 10 | A 11 | B 12 | B 13 | B 14 | B 15 | B ... I bet its a easy one... Thanks for the help f. 回答1: select * from Table, (Select Level as Id from dual connect by Level <= (Select Max(End) from Table)) t Where t.Id between rr.Start and rr.End Order by Map, Start, Id 回答2: This solution at first glance

问题 I'm writing a Range class at the moment and I'm looking for a good name for the common range [0->1]. If it was a vector of length 1, I would call it a Unit vector. Is there a clear name to give this range/interval? Possibly a Unit Range ? 回答1: The closed range between [0,1] is typically called the closed unit interval. If you do not include the endpoints it would be the open unit interval. 回答2: I would go for Interval, as it sounds better than 'Unit Range' :) 回答3: How about Normal Range ? 来源：

问题 How best to detect the word under the cursor using JavaScript? I know that this question has been asked before, but the solutions that I have seen do not work in all scenarios. I have isolated some locations where the code does not work and placed it in a JSFiddle container (http://jsfiddle.net/ohaf4ytL/). Follow along in console, and you can see that "Блгcви2 душE моS" only lists "Блгcви2" and not "душE" and "моS" when hovered over. The current code in use is taken from How to get a word

问题 I am trying to use mongodb's ObjectID to do a range query on the insertion time of a given collection. I can't really find any documentation that this is possible, except for this blog entry: http://mongotips.com/b/a-few-objectid-tricks/ . I want to fetch all documents created after a given timestamp. Using the nodejs driver, this is what I have: var timeId = ObjectId.createFromTime(timestamp); var query = { localUser: userId, _id: {$gte: timeId} }; var cursor = collection.find(query).sort({

问题 I have a div tag with contenteditable set to true. I am trying to find out the last entered word in the div. For example, if I type in This is a test and I hit a space, I want to be able to get the word test I want to be able to use this logic so that I can test each word being typed (after the space is pressed). It would be great if someone could help me with this. 回答1: An easy solution would be the following var str = "This is a test "; // Content of the div var lastWord = str.substr(str

问题 I am trying to write a function that will, on keyup , give me a reference to the element immediately preceding the caret in a contentEditable div. If the caret is in a text node then the function should return null . If the caret is at the start of the contentEditable then the function should return null . But if the caret is at the start of a text node, and this text node is immediately preceded by an element such as a Span, then the function should return a reference to this element. And,

问题 I have data that consists of observations of the range of time a particular status applied for an individual. An individual can have multiple statuses at a given time, or have no stats at all (in which case there would not be an observation). ID STATUS START END 1 A 2013-03-07 2013-04-20 1 B 2013-04-10 2013-05-10 1 C 2013-04-16 2013-07-11 1 B 2013-07-25 2013-08-08 2 A 2013-09-10 2014-04-21 2 C 2013-12-27 2014-01-26 2 D 2014-04-28 2014-05-10 2 E 2014-05-11 2014-07-16 I would like to convert