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What is the difference between Serializable and Externalizable in Java?
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We used Externalizable for large collections of "selected IDs" -- it was far more efficient externalizing as more-or-less a count & an array of primitive ints, than default serialization. That's a very simple usecase, nothing "special" or "unique".
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Simple way to find if two different lists contain exactly the same elements?
...) because we are doing O(2*n) insertions into a hashmap and O(3*n) hashmap selects. I have not fully tested this code, so beware :)
//Returns true:
listsAreEquivelent(Arrays.asList("A","A","B"),Arrays.asList("B","A","A"));
listsAreEquivelent(null,null);
//Returns false:
listsAreEquivelent(Arrays.as...
Can I stretch text using CSS?
... This is great, but unfortunately it doesn’t work with a pseudoselector such as ::first-letter.
– Simone
Dec 14 '18 at 17:07
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Create tap-able “links” in the NSAttributedString of a UILabel?
...tureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapOnLabel:)]];
Now the most sophisticated stuff: finding out whether the tap was on where the link is displayed and not on any other portion of the label. If we had single-lined UILabel, this task could be ...
“java.lang.OutOfMemoryError: PermGen space” in Maven build [duplicate]
... They can even use JAVA_1_8_HOME which would emulate a poor mens toolchain selector)
– eckes
Mar 16 '16 at 23:25
the b...
How do I add a ToolTip to a control?
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Add a ToolTip component to your form
Select one of the controls that you want a tool tip for
Open the property grid (F4), in the list you will find a property called "ToolTip on toolTip1" (or something similar). Set the desired tooltip text on that property.
Rep...
Android: Generate random color on click?
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This approach might not yield the best results, It always ends up with a selection of similar colors that way too dark or way too bright.
Semi-random approach :
If you need some fresh and shiny colors then use the following simple class, that I wrote previously when I had the same issues. It's ...
How to terminate a window in tmux?
...nd . command-prompt
bind a last-window
bind space command-prompt -p index "select-window"
bind r source-file ~/.tmux.conf
# Options
set -g bell-action none
set -g set-titles on
set -g set-titles-string "tmux (#I:#W)"
set -g base-index 1
set -g status-left ""
set -g status-left-attr bold
set -g stat...
What is the most accurate way to retrieve a user's correct IP address in PHP?
...and anonymous proxy servers is just something I'll have to deal with for a select group of individuals.
– Corey Ballou
Oct 28 '09 at 10:04
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Regex: Remove lines containing “help”, etc
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Make sure the Regular expression radio button in the Search Mode area is selected. Then click Replace All and voila! All lines containing your search term help have been removed.
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