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Rails formatting date
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%Y - Year with century (can be negative, 4 digits at least)
-0001, 0000, 1995, 2009, 14292, etc.
%C - year / 100 (round down. 20 in 2009)
%y - year % 100 (00..99)
%m - Month of the year, zero-padded (01..12)
%_m blank-padded ( 1..12)
%-m no-padded (1..12)
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HashSet vs LinkedHashSet
...dHashSet(Collection<? extends E> c) {
super(Math.max(2*c.size(), 11), .75f, true); // <-- boolean dummy argument
addAll(c);
}
And (one example of) a HashSet constructor that takes a boolean argument is described, and looks like this:
/**
* Constructs a new, empty linked hash s...
Adding up BigDecimals using Streams
...invoices = new LinkedList<>();
invoices.add(new Invoice("C1", "I-001", BigDecimal.valueOf(.1), BigDecimal.valueOf(10)));
invoices.add(new Invoice("C2", "I-002", BigDecimal.valueOf(.7), BigDecimal.valueOf(13)));
invoices.add(new Invoice("C3", "I-003", BigDecimal.valueOf(2.3), BigDec...
Delete all rows in an HTML table
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edited Sep 1 '11 at 14:41
answered Sep 1 '11 at 14:09
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Refresh a page using JavaScript or HTML [duplicate]
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answered Mar 14 '11 at 4:49
ReidReid
15.9k55 gold badges3434 silver badges3333 bronze badges
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How do I add a library project to Android Studio?
... Sam R.Sam R.
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32
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Image.Save(..) throws a GDI+ exception because the memory stream is closed
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Community♦
111 silver badge
answered Dec 3 '08 at 7:12
Jon SkeetJon Skeet
1211k772772 gol...
Tool for generating railroad diagram used on json.org [closed]
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answered Aug 22 '11 at 5:22
Peter AjtaiPeter Ajtai
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Rspec, Rails: how to test private methods of controllers?
...urrent_account).
– Confusion
Jan 7 '11 at 15:17
13
Ruby lets you call private methods with send, ...
Embed YouTube video - Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...rame width="1280" height="720" src="https://www.youtube.com/embed/4u856utdR94" frameborder="0" allowfullscreen></iframe>
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