I was curious to know what would happen if I assign a negative value to an unsigned variable. The code will look somewhat like this. unsigned int nVal = 0; nVal = -5; It didn't give me any compiler error. When I ran the program the nVal was assigned a strange value! Could it be that some 2's complement value gets assigned to nVal? ...
Hello, Please tell me how to convert bytes to NSInteger/int in objective-c in iPhone programming? ...
I've found that java.lang.Integer implementation of compareTo method looks as follows: public int compareTo(Integer anotherInteger) { int thisVal = this.value; int anotherVal = anotherInteger.value; return (thisVal<anotherVal ? -1 : (thisVal==anotherVal ? 0 : 1)); } The question is why use comparison instead of subtraction: return th...
Hello everyone, I have currently created a C++ class for a thread safe integer which simply stores an integer privately and has public get a set functions which use a boost::mutex to ensure that only one change at a time can be applied to the integer. Is this the most efficient way to do it, I have been informed that mutexes are quite ...
I need a way to turn my 2 character string dates (i.e. '04/10/2010' & '05/24/2010') into an integers to see if one is greater than the other. If the user enters an end date that is less than the begin date I need to popup an "invalid date range" error. ...
I'm working on a class to manipulate html hex color codes in php. Internally, the class treats RGB values as decimals. When I'm adding or subtracting, I never want the value to exceed 255 nor 'subceed' zero. If course, I can do something piecemeal like if ( $val > 255 ) { $val = 255; } if ( $val < 0 ) { $val = 0; } But th...
MASSIVE EDIT: I have a long int variable that I need to convert to a signed 24bit hexadecimal string without the "0x" at the start. The string must be 6 characters followed by a string terminator '\0', so leading zeros need to be added. Examples: [-1 -> FFFFFF] --- [1 -> 000001] --- [71 -> 000047] Answer This seems to do the trick: ...
Hi My problem is as follows. I have an arraylist of integers. The arraylist contains 5 ints e.g[5,5,3,3,9] or perhaps [2,2,2,2,7]. Many of the arraylists have duplicate values and i'm unsure how to count how many of each of the values exist. The problem is how to find the duplicate values in the arraylist and count how many of that par...
I have this function to prepare variable to be used in a SQL query: function sqlize($mInput) { if (!isset($mInput)) $mInput = "null"; elseif (strtolower($mInput) == "null") { } elseif (is_numeric($mInput)) { } elseif (is_string($mInput)) { $mInput = trim($mInput); $mInput = addslashes($mInp...
Howdy all, I've been learning to program for a Mac over the past few months (I have experience in other languages). Obviously that has meant learning the Objective C language and thus the plainer C it is predicated on. So I have stumbles on this quote, which refers to the C/C++ language in general, not just the Mac platform. With C ...
I have read in many places that integer overflow is well-defined in C unlike the signed counterpart. Is underflow the same? For example: unsigned int x = -1; // Does x == UINT_MAX? Thanks. I can't recall where, but i read somewhere that arithmetic on unsigned integral types is modular, so if that were the case then -1 == UINT_MAX m...
I have 1,2,3,4,5,6,7,8,9 stored as nvarchar inside Level in my db. I then have a dropdownlist with values 1,2,3,4,5,6,7,8,9. When a user makes a selection (i.e 1) (Level.SelectedValue.ToString). This builds an sql query via a param like this: "Select things From MBA_EOI Where level = 1" When I run the select I get the following erro...
Hi everyone, Is_numeric() as well as is_int() returns false if the value is 0. What can i do instead to verify that a specific value is numbers only in PHP? Are we heading straight for the Regular Expressions camp, or are there some nice, handy feature for this out there already? Thanks! ...
import scipy,array def try_read_file(): def line_reader(lines): for l in lines: i = l.find('#') if i != -1: l = l[:i] l = l.strip() if l: yield l def column_counter(): inputer = (line.split() for line in line_reader(file('/home/kartik/Downloads/yahoo_dataset/set1...
I need to store phone numbers starting with 0 but whenever i try to store this in MySql table the starting ZERO is removed because no number start with Zero actually how i can solve this problem please do i need to change the field type from Integer to another type please help ...
So I have this: int a[4] = { 0, 1, 2, 3 }; And then I want to make a new int array: int b[4]; What is the easiest way to make b[] = a[]? ...
In following code, #include<stdio.h> int main() { short a[2]={5,10}; short *p=&a[1]; short *dp=&p; printf("%p\n",p); printf("%p\n",p+1); printf("%p\n",dp); printf("%p\n",dp+1); } Now the output I got was : 0xbfb45e0a 0xbfb45e0c 0xbfb45e04 0xbfb45e06 Here I understood p and p+1, but when we do dp...
Hi everybody, It is a simple thing but i don't get answer for that. I am generated auto generation id concatenate with year 100001, 100002 like that, in this 10 is year 0001 is auto generation numbers. When i split the year and number then getting add one value is 2 for 0001. but i need as 0002. Adding value is 0001+1, 0002+1, 0010+...
Hello all, in Redis (http://code.google.com/p/redis) there are scores associated to elements, in order to take this elements sorted. This scores are doubles, even if many users actually sort by integers (for instance unix times). When the database is saved we need to write this doubles ok disk. This is what is used currently: snprin...
I get this error when trying to take an integer and prepend "b" to it, converting it into a string: File "program.py", line 19, in getname name = "b" + num TypeError: Can't convert 'int' object to str implicitly That's related to this function: num = random.randint(1,25) name = "b" + num ...