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Java: Literal percent sign in printf statement
....printf("%s\t%s\t%1.2f%%\t%1.2f%%\n",ID,pattern,support,confidence);
The complete syntax can be accessed in java docs. This particular information is in the section Conversions of the first link.
The reason the compiler is generating an error is that only a limited amount of characters may follow...
Postgres: “ERROR: cached plan must not change result type”
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SQLite - increase value by a certain number
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How to alias 'git checkout' to 'git co'
I'd like the command git co to be the same as typing git checkout .
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What does mc:Ignorable=“d” mean in WPF?
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MongoDB atomic “findOrCreate”: findOne, insert if nonexistent, but do not update
... specify updates which should only happen when inserting documents.
This, combined with the upsert option, means you can use findAndModify to achieve an atomic findOrCreate-like operation.
db.collection.findAndModify({
query: { _id: "some potentially existing id" },
update: {
$setOnInsert:...
Swift equivalent for MIN and MAX macros
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min and max are already defined in Swift:
func max<T : Comparable>(x: T, y: T, rest: T...) -> T
func min<T : Comparable>(x: T, y: T, rest: T...) -> T
See this great writeup on documented & undocumented built-in functions in Swift.
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How is the default max Java heap size determined?
If I omit the -Xmxn option from the Java command line then a default value will be used. According to Java documentation
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Is there an AddRange equivalent for a HashSet in C#
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Can you get DB username, pw, database name in Rails?
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