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Calling a function dynamically based on an integer value


Calling a function dynamically based on an integer value

By : zZZIMAWAKE
Date : November 20 2020, 09:01 AM
I wish this helpful for you I want to call a different function without write if conditions like this: , You can do something like the following
code :
void Main()
{
    Dictionary<int, Func<bool>> funcMap = new Dictionary<int, Func<bool>>() {
        {1, Function1},
        {2, Function2}
    };


    Console.WriteLine(funcMap[1]());
    Console.WriteLine(funcMap[2]());
}

// Define other methods and classes here


bool Function1()
{
    return true;
}

bool Function2()
{
    return false;
}


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Dynamically calling nested functions based on arguments

Dynamically calling nested functions based on arguments


By : Karl
Date : March 29 2020, 07:55 AM
around this issue If I have the following Python class: , I would probably do something like this:
code :
def register(dict_, *names):
    def dec(f):
        m_name = f.__name__
        for name in names:
            dict_[name] = m_name
        return f
    return dec

class Test(object):

    commands = {}

    @register(commands, 'foo', 'fu', 'fOo')
    def _handle_foo(self):
        print 'foo'

    @register(commands, 'bar', 'BaR', 'bAR')
    def _do_bar(self):
        print 'bar'

    def dispatch(self, cmd):
        try:
            return getattr(self, self.commands[cmd])()
        except (KeyError, AttributeError):
            # Command doesn't exist. Handle it somehow if you want to
            # The AttributeError should actually never occur unless a method gets 
            # deleted from the class
t = Test()

if 'foo' in t.commands:
    t.dispatch('foo')

for cmd in t.commands:
    # Obviously this will call each method with multiple commands dispatched to it once
    # for each command
    t.dispatch(cmd)
dynamically determine the type of integer based on the system (c++)

dynamically determine the type of integer based on the system (c++)


By : user299076
Date : March 29 2020, 07:55 AM
I wish this helpful for you What you want to do is use the standard types like int32_t. This type is always 32 bits. I currently use these types in a portable database (berkeley db) for cross-system compatibility.
See here for all of them.
How to handle null if passed from a calling function to a called function whose parameter is nullable integer?

How to handle null if passed from a calling function to a called function whose parameter is nullable integer?


By : sam
Date : March 29 2020, 07:55 AM
will help you Whtever you have said its also correct but interviewer might wanted to know how updated you are..
code :
 if(!a.HasValue)
    {
        a = 0;
    }
a = a != null ? a : 0;
a ?? 0;
Need to Find dynamically changing integer from string based text file

Need to Find dynamically changing integer from string based text file


By : user3186577
Date : March 29 2020, 07:55 AM
will help you I need to convert or fetch values of integers at the end of the string from following 4 string from a text file . , Looks like you just need.
code :
import re
with open("C:/path/Desktop/set_initial.txt") as infile:
    for line in infile:
        if line.strip():
            a = re.search(r'(\d+)', line)
            if a:
                print(int(a.group(1)))
Calling a char equivalent function with integer in c++ using Function Overloading

Calling a char equivalent function with integer in c++ using Function Overloading


By : chrisdegroot
Date : March 29 2020, 07:55 AM
this one helps.
Is there any possibility that I can simply call show(65) to print the ASCII equivalent value 'A' i.e calling show(char) without calling show(int)
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