lookup

问题 This question already has answers here : Javascript ES6 computational/time complexity of collections (2 answers) Closed 9 months ago . I have seen in an answer that the Set.has() method is O(1) and Array.indexOf() is O(n). var a = [1, 2, 3, 4, 5]; a.indexOf(5); s = new Set(a); s.has(5); //Is this O(1)? Is Set.has() really O(1) ? 回答1: If one read the specification of has() , there is an algorithm describing it: Algorithm for Set.prototype.has(value) : The following steps are taken: Let S be

问题 I have a dataset that looks like below. Column E would be my formula column. I would like Column E to read "Max" for the row where the ID contains the max probability for that state. If two IDs for the same State have the same probability, as in Maryland, I want "Max" to show for the ID with the nearest Date. If two IDs match on both Probability and Date, then I want "Max" to appear for only one ID within each group of States. Column A Column B Column C Column D Column E State Probability

问题 I have a SSRS report with one tablix and i want to hide the tablix based on a condition. I am using two datasets there. The tablix contains dataset1 records. I want to check the dataset2 with Pno and if then only need to display that Pno in tablix. Dataset1 Pno Group 1 A 2 S 3 D 4 F Dataset2 Pno Supply Demand Group 1 A 3 D 5 B 6 R Now I want to display only Pno Group 1 A 3 D I am using the following condition. =IIF(Lookup(Fields!Group.Value, Fields!Pno.Value, Fields!Pno.value, "Dataset2"),

问题 I have a pivot table which can select the values for different Quarters in Report filter. Now I'm doing Vlookup based on the selection of quarters on the table. If I select Quarter-1 it is displaying the Quarter-1 (say in cell D5), If select multiple Quarters (Q-1 and Q-2) it is displaying "Multiple selections" in the same cell (D5). As I'm doing the Vlookup based on the cell D5, it's working fine when I select only single quarter but if I select multiple quarters then it's not working. So I

问题 Im having difficulty with the following, maybe you can help. I need a formula to lookup the following details. I need it to do the following: Search Column 2 for "A" Filter the available rows by the criteria of column 3 having a value of "B1" Filter the available rows by the most recent date from column A Return the value from column D DATE A A1 VALUE 1 DATE C D1 VALUE 1 DATE B F1 VALUE 1 DATE A A1 VALUE 1 DATE C P1 VALUE 1 Thanks, Phil 回答1: You can try this formula: =INDEX(D1:D6,MATCH(9^99

问题 I have two hashes: For example, one contains a list of dishes and their prices dishes = {"Chicken"=>12.5, "Pizza"=>10, "Pasta"=>8.99} The other is a basket hash i.e. I've selected one pasta and two pizzas: basket = {"Pasta"=>1, "Pizza"=>2} Now I am trying to calculate the total cost of the basket but can't seem to get my references right. Have tried basket.inject { |item, q| dishes[item] * q } But keep getting the following error NoMethodError: undefined method `*' for nil:NilClass 回答1:

问题 I have a list of names and numbers NAME | Number Joe | 1 Jane | 0 Jack | 1 Jill | 0 John | 1 I'm trying to look up the numbers and find out the corresponding name The formula I have is {=index($A$2:$B$6, SMALL(IF($B$2:$B$6 = 1, ROW ($B$2:$B$6)), Row(1:1)), 1)} As I understand the formula: First Excel runs the index function. It runs the index function on the array A2 through B6. For the row number in the index function, it uses the function SMALL(IF($B$2:$B$6 = 1, ROW ($B$2:$B$6)), Row(1:1) .

问题 I am sure this is fairly simple put I am having trouble getting started on this. I use a Form to invoice clients which includes the field [Billing_Month]. What I'm looking to accomplish is this. When I create a new invoice, the [Billing_Month] will look to the last invoice created (use [Invoice_#] with DMax?), and populate the value from that that invoices [Billing_Month] I have thought to use: Billing_Month = DMax ("Billing_Month", "frmInvoices"), but this doesn't specifically get me the

问题 I have a single table called 'sitetotals' in mysql with the structure and data below sitetotals_id | sitetotals_date | sitetotals_site | sitetotals_total 1 | 2015-08-08 | siteA | 50 2 | 2015-08-08 | siteB | 40 3 | 2015-08-08 | siteC | 30 4 | 2015-08-08 | siteD | 20 5 | 2015-08-08 | siteE | 10 6 | 2015-08-01 | siteB | 3 7 | 2015-08-01 | siteC | 2 8 | 2015-08-01 | siteD | 1 Here is what I have so far as a html table site | 2015-08-08 | 2015-08-01 siteA | 50 | siteB | 40 | siteC | 30 | siteD |

问题 Excel LOOKUP with multiple outcomes Currently I am using the formula: =LOOKUP("Pending", DK6, A6) So if the cell contents of DK6 says “Pending” it displays the value from cell A6. I need to add some more clauses and would appreciate some help on how to construct the formula. The logic I am looking for is as follows… LOOKUP("Pending", DK6, A6) > ?ELSEIF? > LOOKUP(“Delegated”, DK6, leave cell blank ) > ?ELSEIF? > LOOKUP(“Rejected”, DK6, leave cell blank ) > ?ELSEIF? > LOOKUP( blank cell , DK6,