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What is the best way to filter a Java Collection?
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This method should be used with caution as it relies (at least in implementation of commons-collections-3.2.1) on iterator.remove() method which is optional for the collections, so instead of filtering, say, an array, you might get an UnsupportedOperationException.
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How does Facebook Sharer select Images and other metadata when sharing my URL?
...images from your page that meet its share image criteria: Image must be at least 200px by 200px, have a maximum aspect ratio of 3:1, and in PNG, JPEG or GIF format.
Can I specify multiple images to allow the user to select an image?
Yes, you just need to add multiple image meta tags in the order ...
Why use a prime number in hashCode?
...ultiple of 8, then the bucket inserted into will only be determined by the least significant entry (the one not multiplied at all). Similar entries will collide. Not good for a hash function.
31 is a large enough prime that the number of buckets is unlikely to be divisible by it (and in fact, moder...
Why is there no String.Empty in Java?
...nce it as in your code as
TextBox.setText(EMPTY_STRING);
As this way at least you are explicit that you want an empty String, rather than you forgot to fill in the String in your IDE or something similar.
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Putty: Getting Server refused our key Error
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The default is /var/log/auth.log, at least in my Ubuntu 14.04.1.
– Axel Kemper
Feb 8 '15 at 15:12
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Print a string as hex bytes?
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This doesn't work as of Python 3.6.8 (at least): "hex" is not an encoding of strings. codecs.encode(<bytestring>, "hex") does work, though.
– Eric O Lebigot
Dec 18 '19 at 14:02
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What is the benefit of using $() instead of backticks in shell scripts?
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At least for bash, the comment of @TomFenech doesn't apply to assignments. x=$(f); x=`f` behave the same as x="$(f)"; x="`f`". In contrast, array assignment x=($(f)); x=(`f`) do perform splitting at $IFS characters as expected ...
Execute a command line binary with Node.js
...der to do this example in Windows, one has to use 'cmd', ['/c', 'dir']. At least I was just searching high and low why 'dir' without arguments doesn't work before I remembered this... ;)
– AndyO
Apr 13 '18 at 21:31
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Close and Dispose - which to call?
...tion, this will tie up connections in the pool until the next GC cycle (at least). If you call Dispose, it is not necessary to call Close, and since the using construct makes it so easy to handle Dispose correctly, there is really no reason to call Close.
Connections are automatically pooled, and ...
How to easily map c++ enums to strings
...mplate with all possible values of the enum, which I'm pretty sure gcc (at least) won't do.
– Alastair
Nov 2 '12 at 15:40
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