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Could not find an implementation of the query pattern
... My DataClasses1.Desinger.cs (code LINQ auto generates) does not include IEnumerable<T>. public System.Data.Linq.Table<tblPersoon> tblPersoons { get { return this.GetTable<tblPersoon>(); } } And when I use: var query = (from p in tblPersoon.Cast<Pe...
Can a program depend on a library during compilation but not runtime?
...st a certain API, making it a compile-time dependency, but then at runtime include an implementation that also includes the API.
There may be fringe cases where the project requires a certain dependency to compile but then the corresponding code is not actually needed, but these will be rare.
On t...
LEFT OUTER joins in Rails 3
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You can do with this with includes as documented in the Rails guide:
Post.includes(:comments).where(comments: {visible: true})
Results in:
SELECT "posts"."id" AS t0_r0, ...
"comments"."updated_at" AS t1_r5
FROM "posts" LEFT OUTER JOIN "comm...
Testing two JSON objects for equality ignoring child order in Java
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Android: Access child views from a ListView
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How do I read an entire file into a std::string in C++?
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Use
#include <iostream>
#include <sstream>
#include <fstream>
int main()
{
std::ifstream input("file.txt");
std::stringstream sstr;
while(input >> sstr.rdbuf());
std::cout << sstr.str() <...
Solving “Who owns the Zebra” programmatically?
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Check if an array contains any element of another array in JavaScript
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Vanilla JS
ES2016:
const found = arr1.some(r=> arr2.includes(r))
ES6:
const found = arr1.some(r=> arr2.indexOf(r) >= 0)
How it works
some(..) checks each element of the array against a test function and returns true if any element of the array passes the test funct...