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Render HTML to an image

... which already has a lot of answers, yet I still spent hours trying to actually do what I wanted: given an html file, generate a (png) image with transparent background from the command line Using Chrome headless (version 74.0.3729.157 as of this response), it is actually easy: "/Applications/G...
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Is calculating an MD5 hash less CPU intensive than SHA family functions?

...s with sphlib, a library of hash function implementations in C (and Java). All implementations are from the same author (me) and were made with comparable efforts at optimizations; thus the speed differences can be considered as really intrinsic to the functions. As a point of comparison, consider ...
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Static hosting on Amazon S3 - DNS Configuration

I'm working on a little webapp (all client-side) I want to host it on Amazon S3. I've found several guides on this and have managed to create myself a bucket (with the same name as my domain), set it as a website and upload some content. ...
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inject bean reference into a Quartz job in Spring?

... I do not use Spring's Quartz jobs, because I need to schedule them dynamically, at run time, and all examples of integrating Spring with Quartz that i found were hard-coding the shcedules in the Spring config files... Anyway, here is how I schedule the job: ...
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Detect application heap size in Android

How do you programmatically detect the application heap size available to an Android app? 9 Answers ...
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What is the difference between and ?

...ue may or may not have any real meaning. <html lang="en-US"> essentially means "this page is in the US style of English." In a similar way, <html lang="en-GB"> would mean "this page is in the United Kingdom style of English." If you really wanted to specify an invalid combination, you...
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What is the yield keyword used for in C#?

... The yield keyword actually does quite a lot here. The function returns an object that implements the IEnumerable<object> interface. If a calling function starts foreaching over this object, the function is called again until it "yields". Th...
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Is it Pythonic to use list comprehensions for just side effects?

Think about a function that I'm calling for its side effects, not return values (like printing to screen, updating GUI, printing to a file, etc.). ...
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port forwarding in windows

... Just be sure to have IPv6 installed. Accordingly to this MS KB article, netsh need some IPv6 libraries to configure the port proxy feature. – Renan Mozone Mar 30 '13 at 5:26 ...
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Why can't I use switch statement on a String?

...t compile time. At runtime, while the O(1) performance of tableswitch generally appears better than the O(log(n)) performance of lookupswitch, it requires some analysis to determine whether the table is dense enough to justify the space–time tradeoff. Bill Venners wrote a great article that covers...