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Why are we not to throw these exceptions?
...nt, about custom exceptions: I have never felt the need to do this. Perhaps I'm missing out on something. Under what conditions would one need to craft a custom exception type in lieu of something from the framework?
– DonBoitnott
Mar 18 '14 at 11:17
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Send string to stdin
... into a program, without that input being saved in history, nor visible in ps. Just press Ctrl + C when finished typing to end cat.
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Is there a generator version of `string.split()` in Python?
... splitlines, I would suggest using this RE: '(.*\n|.+$)' str.splitlines chops off the trainling newline though (something that I don't really like...); if you wanted to replicated that part of the behavior, you could use grouping: (m.group(2) or m.group(3) for m in re.finditer('((.*)\n|(.+)$)', s))....
How to concatenate two MP4 files using FFmpeg?
...ethod with formats that support file level concatenation
(MPEG-1, MPEG-2 PS, DV). Do not use with MP4.
ffmpeg -i "concat:input1|input2" -codec copy output.mkv
This method does not work for many formats, including MP4, due to the nature of these formats and the simplistic concatenation performed...
Should IBOutlets be strong or weak under ARC?
...g should be the default and that the developer docs are being updated.
https://twitter.com/_danielhall/status/620716996326350848
https://twitter.com/_danielhall/status/620717252216623104
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How do you use Mongoose without defining a schema?
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PS: You have to do thing.set(key, value) because thing.key=value doesn't work with this method, i.e. it doesn't persist changed into the database otherwise.
– laggingreflex
Mar 18 '15 at...
Differences between “java -cp” and “java -jar”?
...fest, not as a -cp argument.
You can find more about this here and here.
PS: -cp and -classpath are synonyms.
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When to use Vanilla JavaScript vs. jQuery?
...concepts like chaining, implied iteration, etc, to simplify working on groups of elements together.
Learning jQuery is no substitute for learning JavaScript. You should have a firm basis in the latter so that you fully appreciate what knowing the former is making easier for you.
-- Edited to enco...
Are SVG parameters such as 'xmlns' and 'version' needed?
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Does it need to be http or can it be https as well?
– JohannesB
May 25 '17 at 19:27
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Change key pair for ec2 instance
...).
If you still have SSH access, please use one of the answers below.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#replacing-lost-key-pair
Here is what I did, thanks to Eric Hammond's blog post:
Stop the running EC2 instance
Detach its /dev/xvda1 volume (let's call it ...