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  2. In newer JavaScript standards like ES5 and ES6 you can just say. > Boolean (0) //false > Boolean (null) //false > Boolean (undefined) //false. all return false, which is similar to Python's check of empty variables. So if you want to write conditional logic around a variable, just say.

  3. def is_leap_year(year): """Determine whether a year is a leap year.""" return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0) It's similar to the Mark's answer, but short circuits at the first test (note the parenthesis). Alternatively, you can use the standard library's calendar.isleap, which has exactly the same implementation:

  4. I just had the same issue, but nothing was wrong with my module or component files and their imports. I just deleted the .angular folder and ran yarn run build again and everything worked perfectly.

  5. Modulus operator '%' can be used to check whether a number is odd or even.That is when a number is divided by 2 and if the remainder is 0 then its an even number else its an odd number. #include <stdio.h>. int main() {.

  6. 2. Declaration is for the compiler to accept a name (to tell the compiler that the name is legal, the name is introduced with intention not a typo). Definition is where a name and its content is associated. The definition is used by the linker to link a name reference to the content of the name.

  7. When Python executes a program, Python reads the .py into memory, and parses it in order to get a bytecode, then goes on to execute. For each module that is imported by the program, Python first checks to see whether there is a precompiled bytecode version, in a .pyo or .pyc, that has a timestamp which corresponds to its .py file.

  8. To check if a point is within the polygon, get the color of this point from the drawing surface. This is just a O (1) memory fetch. Of course this method is only usable if your drawing surface doesn't have to be huge. If it cannot fit into the GPU memory, this method is slower than doing it on the CPU.

  9. Can the meaning of the curly brace in Java be expressed in a few...

    meta.stackoverflow.com/questions/340229/can-the-meaning-of-the-curly-brace-in...

    Braces ("curly braces") Braces are used to group statements and declarations. The contents of a class or interface are enclosed in braces. Method bodies and constructor bodies are enclosed in braces. Braces are used to group the statements in an if statement, a loop, or other control structures.

  10. Some simple checks to see whether a grammar is LL(1) or not. Check 1: The Grammar should not be left Recursive. Example: E --> E+T. is not LL(1) because it is Left recursive. Check 2: The Grammar should be Left Factored. Left factoring is required when two or more grammar rule choices share a common prefix string. Example: S-->A+int|A.

  11. WSDL is Web Service Description Language. A request ending in '.wsdl' to an endpoint will result in an XML message describing request and response that a use can expect. It descibes the contract between service & client. REST uses HTTP to send messages to services. SOAP is a spec, REST is a style.