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When to use in vs ref vs out
...opied into the other variable. For value types, that means that the entire content of the type is copied. For reference types, that means that the memory location is copied. Either way, it does create a copy of the data contained in the variable. The only real relevance that this holds deals with as...
'git add --patch' to include new files?
...does, it just adds the specified untracked files to the indm>ex m>, but without content.
– Odin
May 29 '19 at 0:17
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Correct way to use StringBuilder in SQL
...ilder constructor, so that it starts out with enough capacity for the full content we're going to append. The default size used if you don't specify one is 16 characters, which is usually too small and results in the StringBuilder having to do reallocations to make itself bigger (IIRC, in the Sun/Or...
Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
...
Fast-forward to 2013: javascript:void(0) violates Content Security Policy on CSP-enabled HTTPS pages. One option would be then to use href='#' and event.preventDefault() in the handler, but I don't like this much. Perhaps you can establish a convention to use href='#void' an...
Use of Finalize/Dispose method in C#
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The recommended IDisposable pattern is here. When programming a class that uses IDisposable, generally you should use two patterns:
When implementing a sealed class that doesn't use unmanaged resources, you simply implement a Dispos...
How to concatenate two MP4 files using FFmpeg?
...sode.
Then I created a simple batch file (concat.bat), with the following contents:
:: Create File List
echo file file1.mp4 > mylist.txt
echo file file2.mp4 >> mylist.txt
echo file file3.mp4 >> mylist.txt
:: Concatenate Files
ffmpeg -f concat -i mylist.txt -c copy output.mp4
Th...
How can I quantify difference between two images?
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General idea
Option 1: Load both images as arrays (scipy.misc.imread) and calculate an element-wise (pixel-by-pixel) difference. Calculate the norm of the difference.
Option 2: Load both images. Calculate some feature vector for each of them (like a histogra...
Can I run multiple versions of Google Chrome on the same machine? (Mac or Windows)
... the script
#!/usr/bin/env bash
/Applications/Google\ Chrome\ VERSION.app/Contents/MacOS/Google\ Chrome --user-data-dir="tmp/Google Chrome/VERSION/"
(This will store Chrome's data at ~/tmp/Google Chrome/VERSION/. For more m>ex m>planations see the original answer.)
Go back to your Terminal and enter t...
Browser statistics on JavaScript disabled [closed]
...ody mindedness.
Sure, it is possible to allow for non-javascript enabled content for every aspect of a website, plus provide the optimal m>ex m>perience - but the budget is going to sky-rocket for the build.
There's some seriously awesome stuff going down with Javascript which actually makes sites fa...
What are the differences between virtual memory and physical memory?
...e there are running. Moving them will mean moving the address of all their contents (remember, OS maintains a mapping of the memory spat out by the software to the actual memory address. Imagine software had spat out an address of 45 with data 123, and OS had stored it in location 2012 and created a...