range

问题 I want to limit a user input to a specific range (-90 to 90). Number can be integer or decimal. The default value must be 0 . I do not want to use HTML5 min / max attributes. This is my HTML: <input type="number" value="0" /> This is what I have tried: $('input').on('input', function () { var value = $(this).val(); $(this).val(Math.max(Math.min(value, 90), -90)); }); This is buggy because it doesn't let me erase the default value (therefore I cannot enter a - for a negative number or a . for

问题 I want to write a for loop that will iterate over the powers of 2 for each loop. For example I would want a range like this: 2, 4, 8, 16, ... , 1024 How could I do this? 回答1: counter = 2 while counter <= 1024: print counter counter *= 2 回答2: You'll need to create your own function: def doubling_range(start, stop): while start < stop: yield start start <<= 1 This uses a left-shift operation; you could also use start *= 2 if you find that clearer. Demo: >>> def doubling_range(start, stop): ...

问题 This question already has an answer here : How can I prune these column ranges given another file in R? (1 answer) Closed 3 years ago . I have a df1 called ranges like: 1 bin chrom chromStart chromEnd name score 2 12 chr1 836780 856723 -5.7648 599 3 116 chr1 1693001 1739032 -4.8403 473 4 117 chr1 1750780 1880930 -5.3036 536 5 121 chr1 2020123 2108890 -4.4165 415 I also have a data.frame called viable like: chrom chromStart chromEnd N chr1 840000 890000 1566 chr1 1690000 1740000 1566 chr1

问题 I really thought this would work, but when I ran it, I always get some random huge decimal and it makes no sense. The logic is right, so why doesn't the code work? do{ value = rnd.nextDouble(); }while(value>min && value<max); Keep in mind "min" and "max" are actually functions that do some simple arithmetic operations then return that value, but I just put min and max for simplicity so I don't have to post the entire class. 回答1: You can declare a start and end variables ( int or double ), and

问题 This is my second question for this code. this code comes from a modified script on page 66 of "Sams Teach Yourself C Programming" 7th edition. After copying the script out of the book, I modified it (just a little) to make it more interesting. I added some additional constants and variables and such to enable it to accept a larger input/output value. because the input/output is type "unsigned long int", which has a range of 0 - 2147483647, I set that to be the LIMIT. Then I added an "else"

问题 The error is being thrown on the line ThisWorkbook.Sheets("data").Range("AJ2:AM2").AutoFill Destination:=Range("AJ2:AM" & localLastRow) It was previously cooperating, but after I corrected another error it seems that it doesn't want to play nice anymore. The source is contained within the destination. I am just not sure where the problem is coming from. Any help would be very appreciated. I have posted the entire macro below. It will eventually be one that is called into a main macro. Sub

问题 i've a form user can enter any date , but i want to set a date range validation . for example: from 1-12-2012 to 1-1-2013 and the system can't accept any date from user that not in the range.. i've tried this javascript code but it doesn't give me any alert even when date not in range .. this is part of my form : echo "<tr><th bgcolor='FF6600'> Date <font size='4' color='red'>* </font></th> <td> <input type='date' name='v2' value='' ></td></tr>"; echo "<tr><th bgcolor='FF6600'> Time <font

问题 I'm trying to generate a random double between but not including it's lower and upper bound (lower, upper). I've seen a lot of questions about generating a number from, and including it's lower bound up to, but not including it's upper bound [lower, upper), but they don't answer my question as they do not address this case. I've come up with two "solutions" to the problem, but am not really satisfied by either. First "solution" double myvalue; do { myvalue = myrandom.nextDouble() * (upper -

问题 I need to make a program in python that generates ten random numbers from 1-100 that stores it in a list using a loop. Then a second loop should display said list, then calculate the sums of the even and odd elements to display them. This is what I have so far, any help is greatly appreciated. Thanks import random def main(): numlist = [0] * 10 for r in range(10): numlist[r] = random.randint(1,100) print(numlist) list_length = len(numlist) print('The number of elements in the list is', list

问题 As the title states, I would like to use my cursor's position as the start point to a range. Right now have simple sample like this <html> . . <p>The quick brown fox jumps over the lazy dog</p> . . </html> On the CS/JS side of things I have event listen set to mouse move that attempts to print out the offset for the cursor position, however I am not using the correct method and end up getting either undefined or no method error s. Again, really simple CS for the time being since I really just