C++ – how to find the length of an integer
The number of digits of an integer n in any base is trivially obtained by dividing until you’re done:
integer
MySQL Error 1264: out of range value for column
The value 3172978990 is greater than 2147483647 – the maximum value for INT – hence the error. MySQL integer types and their ranges are listed here. Also note that the (10) in INT(10) does not define the “size” of an integer. It specifies the display width of the column. This information is advisory only. To fix the error, change your datatype to VARCHAR. Phone and … Read more
python “TypeError: ‘numpy.float64’ object cannot be interpreted as an integer”
N[i]/2 will be a float64 but range() expects an integer. Just cast the call to
Converting String to Int with Swift
Basic Idea, note that this only works in Swift 1.x (check out ParaSara’s answer to see how it works in Swift 2.x): Update for Swift 4
Exception in thread “main” java.lang.NumberFormatException: For input string: “S”
The letter S is not a number. Did you mean to write the number 5? Or did you mean to print the ASCII or Unicode value of the character S?
Fill array with random numbers within a specified range (C++)
You are using exact same integer in each initialization. for loop should be like that
Checking whether a variable is an integer or not
If you need to do this, do unless you are in Python 2.x in which case you want Do not use type. It is almost never the right answer in Python, since it blocks all the flexibility of polymorphism. For instance, if you subclass int, your new class should register as an int, which type will not do: This adheres … Read more
Declaring an unsigned int in Java
Java does not have a datatype for unsigned integers. You can define a long instead of an int if you need to store large values. You can also use a signed integer as if it were unsigned. The benefit of two’s complement representation is that most operations (such as addition, subtraction, multiplication, and left shift) are identical on a binary level for … Read more
How to check whether a int is not null or empty?
int variables can’t be null If a null is to be converted to int, then it is the converter which decides whether to set 0, throw exception, or set another value (like Integer.MIN_VALUE). Try to plug your own converter.
How does Python manage int and long?
int and long were “unified” a few versions back. Before that it was possible to overflow an int through math ops. 3.x has further advanced this by eliminating long altogether and only having int. Python 2: sys.maxint contains the maximum value a Python int can hold. On a 64-bit Python 2.7, the size is 24 bytes. Check with sys.getsizeof(). Python 3: sys.maxsize contains the … Read more