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Can lambda functions be templated?
...n a templated class or function.
#include <iostream>
#include <string>
using namespace std;
template<typename T>
void boring_template_fn(T t){
auto identity = [](decltype(t) t){ return t;};
std::cout << identity(t) << std::endl;
}
int main(int argc, char *...
How do I specify new lines on Python, when writing on files?
In comparison to Java (in a string), you would do something like "First Line\r\nSecond Line" .
13 Answers
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How to test if parameters exist in rails
...te:
Not there at all.
There but nil.
There but false.
There but an empty string.
as well. Hard to say without more details of your precise situation.
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How to run a single test with Mocha?
... there's a catch: grep option needs to be a ´RegExp()´ object. If it's a string, it will be escaped.
– h-kippo
Nov 21 '14 at 7:42
1
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Create Generic method constraining T to an Enum
... better implementation should be something like this:
public T GetEnumFromString<T>(string value) where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enumerated type");
}
//...
}
This will still permit passing of value type...
Regular expression to allow spaces between words
...f the following cases that one would not usually mean to match:
An empty string, "".
A string comprised entirely of spaces, " ".
A string that leads and / or trails with spaces, " Hello World ".
A string that contains multiple spaces in between words, "Hello World".
Origi...
How do I grant myself admin access to a local SQL Server instance?
...LE [sysadmin] ADD MEMBER [<<DOMAIN\USERNAME>>]; and do not add extra semicolon after GO or the command never executes.
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Proper way to declare custom exceptions in modern Python?
...er standard other exception classes have, so that (for instance) any extra string I include in the exception is printed out by whatever tool caught the exception.
...
Base64 encoding and decoding in client-side Javascript
... there any methods in JavaScript that could be used to encode and decode a string using base64 encoding?
13 Answers
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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.
...olute/path/to/file.rb, what happens is that expand_path will construct the string /absolute/path/to/file.rb/../relative/path, and then apply a rule that says that .. should remove the path component before it (file.rb in this case), returning /absolute/path/to/relative/path.
Is this best practice? ...