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Modern way to filter STL container?
...t> foo = {25,15,5,-5,-15};
std::vector<int> bar;
// copy only positive numbers:
std::copy_if (foo.begin(), foo.end(), std::back_inserter(bar), [](int i){return i>=0;} );
std::copy_if evaluates the lambda expression for every element in foo here and if it returns true it copies the val...
Create an enum with string values
...world"
};
????
TypeScript 1.8
Since TypeScript 1.8 you can use string literal types to provide a reliable and safe experience for named string values (which is partially what enums are used for).
type Options = "hello" | "world";
var foo: Options;
foo = "hello"; // Okay
foo = "asdf"; // Error...
Is #pragma once part of the C++11 standard?
Traditionally, the standard and portable way to avoid multiple header inclusions in C++ was/is to use the #ifndef - #define - #endif pre-compiler directives scheme also called macro-guard scheme (see code snippet below).
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Stop node.js program from command line
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To end the program, you should be using Ctrl + C. If you do that, it sends SIGINT, which allows the program to end gracefully, unbinding from any ports it is listening on.
See also: https://superuser.com/a/262948/48624
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Unsubscribe anonymous method in C#
Is it possible to unsubscribe an anonymous method from an event?
11 Answers
11
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NGINX: upstream timed out (110: Connection timed out) while reading response header from upstream
...a request that map-reduces a chunk of data for about 25K users and returns it from Riak to the app, I get an error in the Nginx log:
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How can I pass a Bitmap object from one activity to another
In my activity, I create a Bitmap object and then I need to launch another Activity ,
How can I pass this Bitmap object from the sub-activity (the one which is going to be launched)?
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How to use transactions with dapper.net?
...tables. I am using dapper.net. I don't see any way to handle transactions with dapper.net.
5 Answers
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Storing WPF Image Resources
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If you will use the image in multiple places, then it's worth loading the image data only once into memory and then sharing it between all Image elements.
To do this, create a BitmapSource as a resource somewhere:
<BitmapImage x:Key="MyImageSource" UriSource="../Media/I...
Iterating through a JSON object
I am trying to iterate through a JSON object to import data, i.e. title and link. I can't seem to get to the content that is past the : .
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