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Check if a String contains numbers Java
I'm writing a program where the user enters a String in the following format:
14 Answers
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C++ Const Usage Explanation
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Read this: https://isocpp.org/wiki/faq/const-correctness
The final const means that the function Method3 does not modify the non mutable members of its class.
const int* const means a constant pointer to a constant int: i.e. a pointer...
Git stash: “Cannot apply to a dirty working tree, please stage your changes”
I am trying to apply changes I stashed earlier with git stash pop and get the message:
11 Answers
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how to reference a YAML “setting” from elsewhere in the same YAML file?
...'ve create a library, available on Packagist, that performs this function:
https://packagist.org/packages/grasmash/yaml-expander
Example YAML file:
type: book
book:
title: Dune
author: Frank Herbert
copyright: ${book.author} 1965
protaganist: ${characters.0.name}
media:
- hardcover
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Code for a simple JavaScript countdown timer?
I want to use a simple countdown timer starting at 30 seconds from when the function is run and ending at 0. No milliseconds. How can it be coded?
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Simple way to transpose columns and rows in SQL?
...ut these solutions (including some actual T-SQL exmaples) in this article:
https://www.sqlshack.com/multiple-options-to-transposing-rows-into-columns/
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How to declare a structure in a header that is to be used by multiple files in c?
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LINQ: Distinct values
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Why does casting int to invalid enum value NOT throw exception?
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How do I find the length of an array?
...<< (sizeof(a)/sizeof(*a)) << std::endl;
This doesn't work on pointers (i.e. it won't work for either of the following):
int *p = new int[7];
std::cout << "Length of array = " << (sizeof(p)/sizeof(*p)) << std::endl;
or:
void func(int *p)
{
std::cout << "L...