if-statement

问题 I already found out how to count cases based on two conditions: sum(dat2$happy > 7 & dat2$induction == 1) But do you know how I can include a range of values as a criterion? One out of many codes I tried: sum(dat2[dat2$happy > 4 & dat2$happy < 8] & dat2$induction == 2) Tank you so much! 来源： https://stackoverflow.com/questions/65923147/counting-cases-two-conditions-range-of-values

问题 If multiple if-statements can be true at the same time, how does JS determine which one to run? In the example below, I know "Cool, now I have a lot of nachos to myself." will get returned, but I just wonder how that is determined? What if instead of friendsAtYourParty === 0 it would be friendsAtYourParty < 3 ("Cool, now I have a lot of nachos to myself." would get returned again, but why?). I was thinking maybe the one that is more specific/closer to the value "wins"? if (friendsAtYourParty

问题 I am trying to fill new column values in R data frame based on a condition that compares values from two columns. Using for loop and if-else control statement. Here's my sample dataset Year1 | Year2 ----- | ----- 1990 | 1990 1992 | 1992 1995 | 1998 1997 | 2000 I would like to do something like this: for (i in 1:length(year1) { if (year1[i] == year2[i]) flag = 1 next else flag = 2 } This doesn't seem to be working. For some reason, all the conditions are evaluated as TRUE and flag is always 1.

问题 I am trying to add the last cash flow back into the par value using a if/else loop, but I can't seem to do it. How do I assign an int to a specific item in the range? I am trying to make it so if the index > 10, it will add the par value back in. par = 1000 coupon_rate = 3 T = 5 freq = 2 def cf_calculator(par, r, T, freq): for i in range(T * freq): if (T) < (T * freq): coupon = (r/100) * par/freq print(coupon) else: coupon = (r/100) * par/freq + par print(coupon) print(cf_calculator(1000,3,5

问题 I have multiple JTextField s and JComboBox in my JFrame . So whenever I click the _Add_ button it will check if the four (4) text fields in Current Medication Panel is Empty. If it is not then Execute, but it also depends if the Personal info Panel text fields are filled. But I have a problem when I use the if and else statement, if I use the if and else : if(condition if the first textfield is empty) { // execute something like the textfield turn to red } else if(condition if the second

问题 I have four TextFields on my UI page.I get the input values of the user from all textfields for example values Textfield1.getvalue(),Textfield2.getvalue(),Textfield3.getvalue(),Textfield4.getvalue() . Now on a button click, I need to check which textfields are actually filled by the user and attach those values I need to send a http request to the server to query on the database. These values are used to filter values from a table. SO basically the values are "TABLE COLUMN" values. For this,

问题 I have a whole list of misspelling and I would like to change the all in one go. Is there an easy way to do so without writing a massive ifelse statement? vegas <- c("North Las Vegas","N Las Vegas", "LAS VEGAS", "Las vegas","N. Las Vegas", "las vegas", "Las Vegas", "Las Vegas ", "South Las Vegas", "La Vegas", "Las Vegas, NV", "LasVegas", "110 Las Vegas", "C Las Vegas", "Henderson and Las vegas", "las Vegas", "Las Vegas & Henderson", "Las Vegas East", "Las Vegas Nevada", "Las Vegas NV", "Las

问题 I have a whole list of misspelling and I would like to change the all in one go. Is there an easy way to do so without writing a massive ifelse statement? vegas <- c("North Las Vegas","N Las Vegas", "LAS VEGAS", "Las vegas","N. Las Vegas", "las vegas", "Las Vegas", "Las Vegas ", "South Las Vegas", "La Vegas", "Las Vegas, NV", "LasVegas", "110 Las Vegas", "C Las Vegas", "Henderson and Las vegas", "las Vegas", "Las Vegas & Henderson", "Las Vegas East", "Las Vegas Nevada", "Las Vegas NV", "Las

问题 When I run this piece of code for n=5 the output I get is "5 3 1 1 3 5" I get the 5 3 1 part but after that n=-1 but when I run the code with a debugger it when n=-1 it goes to the line after numbers(n-2); i.e System.out.prt(n+ ""); even though that statement is contained in the if block. Why does this happen? public void numbers(int n) { if(n>0) { System.out.print(n+" "); numbers(n-2); System.out.print(n+" "); } } TLDR : when n=-1 System.out.prt(n+ ""); even though it is within the if block

问题 Requested behaviour: I would like to create a search form in Google Sheets to query a table that I use as a database. The user should be able to query the table by multiple searches categories which the user can type into a cell of the sheet. If the user does not type in a search string, then all items should be displayed. Also, the user should be able to choose between an "including OR" and an "excluding AND" search. The original table is on a different sheet than the search form. The final