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In java 8, method reference in String uppercase() is not static. Then how method reference is working? String :: toUpperCase().
You might want to show the type of the Interface this is assigned to, but for example
Function<String, String> f = String::toUpperCase;
Is equivalent to
Function<String, String> f = s -> s.toUpperCase();
See
https://docs.oracle.com/javase/tutorial/java/javaOO/methodreferences.html
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Is it possible to take a [...]string{} and then loop over each string to create a new variable where the variable name is the string?
I can do this using interpolation with some other languages, but I'm kind of a golang newbie.
Nope. Go provides no way to dynamically create variables.
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I have a hash like the one shown below
profile={"acakxqcnwbhtfcppyilk"=>"unlocked", "achurktnaavqqnwtfvvt"=>"locked", "chrofmjydwzcbswhpste"=>"locked", "ChromeProfile"=>"unlocked", "clcqozsfdblntkwlcheo"=>"unlocked", "gpqhioztlmkoitjqxerm"=>"unlocked", "hododpaxflyzgpwortjl"=>"unlocked", "hyqnjrpttwclueqwttdw"=>"unlocked", "jtdeyzcxdpgblxmpldtx"=>"unlocked", "kifxvxmbifkicmapedir"=>"unlocked", "lucjkeeqzynhjurnpewl"=>"unlocked", "lyccchkgyscmljcvkvcj"=>"unlocked", "nmqhlowcqnwmwbxijwry"=>"unlocked", "nseucpicwbcyviargwjt"=>"unlocked", "osecuzrbvodwgkdwovjd"=>"unlocked", "pqhlxugxqppfybxdkemr"=>"unlocked", "qgoaryzyriohpwzbprgg"=>"unlocked", "rwtlttvtbrmziyuimgad"=>"unlocked", "sxkcvnlsgqauwcbkmjcy"=>"unlocked", "uyfvlzyllwimhklmmmns"=>"unlocked", "vgvobxhpflhappnajizs"=>"unlocked", "vlbbphwoyweyguhcmdwv"=>"unlocked", "vrsjncafxunswclescvu"=>"unlocked", "wxsninefjvtrxvntgkni"=>"unlocked", "xdqndtyyxctkovyfsldi"=>"unlocked", "ycvguesevlbopicmxfbc"=>"unlocked"}
I have to return the key which has the value 'locked', If there are more than one 'locked' is present, then the first one has to be returned.
Is there any specific method is available to accomplish task?
Try the key() method
profile.key('locked')
Read more here
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I'm curios as to what this specific method is called:
public Word(String word) {
this._word = word;
}
Thanks in advance!
This is called a constructor. In this case, it would be for a Word object. It takes parameters to assign values to instance variables (in this case, the String word.)
Here is a link to the Oracle documentation on providing constructors in Java for further reference.
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I'm trying to use a negative value in a string which is in a hash.
{"amount"=>"-50.01", "currency"=>"CAD"}
If I write transaction.amount I get 0.5001E2, if I use to_f I get 50.01.
I'm trying to extract the -50 value.
Thank you for your help!
Try
transaction['amount']
For example
a = {"amount"=>"-50.01", "currency"=>"CAD"}
Then
a['amount']
returns '-50.01'
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Is it possible to pass parameter to a method like this:
variable = my_method(:parameter)
No quotes, no nothing.Just -> :parameter .
Yes, you can pass a symbol to a method. Example:
puts('hello')
or
puts(:hello)