numbers

问题 i have problem in input type number in html5, look at to my picture, in other browser that work fine for me but in firefox, the spinner is too small. Is there a generally way to make it better? 回答1: You can remove the spinner on Firefox by adding following CSS rule input[type=number] { -moz-appearance: textfield; } There is no way to change its appearance. Please note that the input validation still works. On Firefox 48.0.1, it appears like this: Please update your Firefox to latest version.

问题 I am having a difficult time telling that a variable is string or number on foxpro 6 or other version. I am new in this languages. 回答1: You can use the VARTYPE or TYPE functions - these are slightly different and you should review the documentation before deciding which to use. 回答2: Have a look at the Vartype() function - it will return 'N' for numeric, 'C' for character and so on. 来源： https://stackoverflow.com/questions/7563907/function-to-know-that-a-variable-is-string-or-number-on-foxpro

问题 I've made something like : Number.prototype.foo = function () { //code } // Octal number! (013).foo(); But inspecting this inside of foo function, I get 11 as value... What's wrong? 回答1: What did you expect to happen? Javascript treats all whole numbers that start with a zero as octal[*] so the actual value of 013 is indeed 11 (decimal). The Number class only deals in values, and won't know that you originally passed in an octal constant. [*] There's an exception for whole numbers containing

问题 I just wrote the following to utilize the sieve to find the largest prime factor of some natural number greater than 2. The program builds and runs and works for small test values, but simply crashes for values larger than, say, 1000000. I wrote this myself--and believe it will probably be extremely inefficient--after finding out what the sieve is about. Can you please suggest improvements? Thank you. //LARGEST PRIME FACTOR w/SIEVE OF ERATHOSTHENES #include <iostream> #include <math.h> using

问题 I am working on something. I got to check a string for validation. This string has a country code and a university code (from their own tables in the database) and a bunch of numbers. Now I need to validate this string. I need to check this string on the country code and university code and if it has numbers yes or no. I have tried alot of things at the moment. I tried to use alot of if statements, regexp_like, instr, substr, select statements and others. But I am not capable of checking the

问题 I try to spool output in a nice way, so i am formatting all VARCHAR2 columns to a5. However, my problematic columns are: SLOTNUM of type NUMBER(2) and FEEADJUSTMENT of type NUMBER(5,2). My code is: column SLOTNUM format 999; column FEEADJUSTMENT format 999.9; ......... column [other VARCHAR2] format a5; select * from allTables; Result is: SLOTNUM DATEV ACTUA NOTES FEEADJUSTMENT TREAT NAME ------- ----- ----- ----- ------------- ----- ----- 12 19-JU 19-ju Treat 2.5 12345 Flu N-13 n-13 ment 6

问题 I am using Nativescript to create an Android and iOS App. As it is a kind of a calculator there are a lot of input fields for numbers. The numbers are decimal and can be negative. So I need a Keyboard with numbers, decimal point and minus sign (dash). Therefore I use the keyboard type "number" : The keyboard that opens up in Android is fine. But the one in iOS has a lot of unnecessary fields like "(". iOS KeyBoard As i found out there is no keyboard in iOS with the fields that I want: https:/

问题 How to get a line number that contains a specified string in a text file? Example text file contains: Red White Yellow Green How to get "Yellow" line number? and can i write a string in a specified line, lets say i want to write a string in line 2? 回答1: To find a line in a text file, you need to read the lines from the start of the file until you find it: string fileName = "file.txt"; string someString = "Yellow"; string[] lines = File.ReadAllLines(fileName); int found = -1; for (int i = 0; i

问题 I'm adding a pair of unsigned 32bit binary integers (including overflow). The addition is expressive rather than actually computed, so there's no need for an efficient algorithm, but since each component is manually specified in terms of individual bits, I need one with a compact representation. Any suggestions? Edit: In terms of boolean operators. So I'm thinking that carry = a & b; sum = a ^ b; for the first bit, but the other 31? Oh, and subtraction! 回答1: You can not perform addition with

问题 I want to produce different numbers with C . We can generate a random number using the stdlib library and the srand function. For example; I want to produce a random number between 0 and 5. #include <stdio.h> #include <time.h> #include <stdlib.h> int main(void) { int i; int n = 4; int array[3]; srand(time(NULL)); for(i = 0; i < n; i++) { array[i] = rand() % 5; printf("%d\n", array[i]); } return 0; But the same numbers may coincide here.Like this: 2 4 4 1 How can I prevent this? 回答1: Maybe you