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How can I call controller/view helper methods from the console in Ruby on Rails?
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To call helpers, use the helper object:
$ ./script/console
>> helper.number_to_currency('123.45')
=> "R$ 123,45"
If you want to use a helper that's not included by default (say, because you removed helper :all from Ap...
What is the most frequent concurrency issue you've encountered in Java? [closed]
...erent open source libraries did something like this:
private static final String LOCK = "LOCK"; // use matching strings
// in two different libraries
public doSomestuff() {
synchronized(LOCK) {
this.work();
}
}
At first glance, this look...
How to replace all strings to numbers contained in each string in Notepad++?
...f you had two capture groups, for example (.*)="(\d+)", $1 will return the string value and $2 will return the number.
So by using:
Find: .*"(\d+)"
Replace: $1
It will return you
4
403
200
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116
15
Please note that there many alternate and better ways of matching the aforementioned pattern....
What is the minimum valid JSON?
...json.org/ but I'm not sure I know the answer to the simple question. What strings are the minimum possible valid JSON?
8 A...
How to get names of enum entries?
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enum Enum {
A
}
let nameOfA = Enum[Enum.A]; // "A"
Keep in mind that string enum members do not get a reverse mapping generated at all.
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trying to animate a constraint in swift
... that I want to enlarge its width when tapped on. I set up the constraints and made sure the constraint on the left has the lower priority then the one that I am trying to animate on the right side.
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What does preceding a string literal with “r” mean? [duplicate]
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The r means that the string is to be treated as a raw string, which means all escape codes will be ignored.
For an example:
'\n' will be treated as a newline character, while r'\n' will be treated as the characters \ followed by n.
When an ...
Java generics type erasure: when and what happens?
... into compile-time checks and execution-time casts. So this code:
List<String> list = new ArrayList<String>();
list.add("Hi");
String x = list.get(0);
is compiled into
List list = new ArrayList();
list.add("Hi");
String x = (String) list.get(0);
At execution time there's no way of ...
What is the leading LINQ for JavaScript library? [closed]
I'm looking for a JavaScript library that will allow me to query complex JSON objects using a LINQ-like syntax. A quick search found a couple of promising options that look they might offer what I need:
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Convert List into Comma-Separated String
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Enjoy!
Console.WriteLine(String.Join(",", new List<uint> { 1, 2, 3, 4, 5 }));
First Parameter: ","
Second Parameter: new List<uint> { 1, 2, 3, 4, 5 })
String.Join will take a list as a the second parameter and join all of the elements ...