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What's the meaning of interface{}?
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You can refer to the article "How to use interfaces in Go" (based on "Russ Cox’s description o...
Difference between Dictionary and Hashtable [duplicate]
...eneric dictionary, you must implement your own synchronization or (in .NET 4.0) use ConcurrentDictionary<TKey, TValue>.
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When to use nil, blank, empty? [duplicate]
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4 Answers
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How do I add spacing between columns in Bootstrap?
...lass="col-md-5 col-md-offset-2"></div>
</div>
In Bootstrap 4 use: offset-2 or offset-md-2
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How can I make a UITextField move up when the keyboard is present - on starting to edit?
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How to truncate a foreign key constrained table?
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You cannot TRUNCATE a table that has FK constraints applied on it (TRUNCATE is not the same as ...
How do you automate Javascript minification for your Java web applications?
...nule (for JSP, JSF, Grails, Ant)
Ant macros for Google Closure compiler
wro4j (Maven, servlet filters, plain Java, etc)
ant-yui-compressor (ant task for compressing JS+CSS)
JAWR
Minify Maven Plugin
humpty
Ant exec task using Terser
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How do I make a column unique and index it in a Ruby on Rails migration?
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The short answer for old versions of Rails (see other answers for Rails 4+):
add_index :table_name, :column_name, unique: true
To index multiple columns together, you pass an array of column names instead of a single column name,
add_index :table_name, [:column_name_a, :column_name_b], unique...
Convert Int to String in Swift
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Converting Int to String:
let x : Int = 42
var myString = String(x)
And the other way around - converting String to Int:
let myString : String = "42"
let x: Int? = myString.toInt()
if (x != nil) {
// Successfully converted String to Int
}
Or if you're usi...
Is an array an object in java
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Yes.
The Java Language Specification section 4.3.1 starts off with:
An object is a class instance or an array.
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