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How can I convert an RGB image into grayscale in Python?
... with Python 3.5 on Ubuntu 16.04 LTS (Xeon E5 2670 with SSD).
Average run times
pil : 1.037 seconds
scipy: 1.040 seconds
sk : 2.120 seconds
PIL and SciPy gave identical numpy arrays (ranging from 0 to 255). SkImage gives arrays from 0 to 1. In addition the colors are converted slightly diffe...
How do I convert a string to enum in TypeScript?
I have defined the following enum in TypeScript:
21 Answers
21
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When to use std::forward to forward arguments?
...riginal question - apply std::forward to:
a universal reference the last time it’s used in the function
a universal reference being returned from functions that return by value
An example for the first case:
template<typename T>
void foo(T&& prop) {
other.set(prop); // use p...
Error java.lang.OutOfMemoryError: GC overhead limit exceeded
...hat for some reason the garbage collector is taking an excessive amount of time (by default 98% of all CPU time of the process) and recovers very little memory in each run (by default 2% of the heap).
This effectively means that your program stops doing any progress and is busy running only the gar...
What is considered a good response time for a dynamic, personalized web application? [closed]
...that includes dynamic content and personalization, what is a good response time from the server (so excluding network latency and browser rendering time)? I'm thinking about sites like Facebook, Amazon, MyYahoo, etc. A related question is what is a good response time for a backend service?
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Why would json_encode return an empty string
I have a simple php structure with 3 nested arrays.
13 Answers
13
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How can I define an interface for an array of objects with Typescript?
I have the following interface and code. I thought I was doing the definitions correctly but I am getting an error:
12 Answ...
Trim trailing spaces in Xcode
Is there a way to force Xcode to trim trailing whitespaces when I save file?
7 Answers
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How can I convert a Unix timestamp to DateTime and vice versa?
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Here's what you need:
public static DateTime UnixTimeStampToDateTime( double unixTimeStamp )
{
// Unix timestamp is seconds past epoch
System.DateTime dtDateTime = new DateTime(1970,1,1,0,0,0,0,System.DateTimeKind.Utc);
dtDateTime = dtDateTime.AddSecond...
How can I create download link in HTML?
I have a basic idea of HTML. I want to create the download link in my sample website, but I don't have idea of how to create it. How do I make a link to download a file rather than visit it?
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