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What is a “symbol” in Julia?
... read those answers, it seems that the reason a symbol is different than a string is that strings are mutable while symbols are immutable, and symbols are also "interned" – whatever that means. Strings do happen to be mutable in Ruby and Lisp, but they aren't in Julia, and that difference is actu...
Java: How to set Precision for double value? [duplicate]
...
This is an easy way to do it:
String formato = String.format("%.2f");
It sets the precision to 2 digits.
If you only want to print, use it this way:
System.out.printf("%.2f",123.234);
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typecast string to integer - Postgres
...hich has raw feeds in Varchar, I need to import a column in varchar into a string column. I tried using the <column_name>::integer as well as to_number(<column_name>,'9999999') but I am getting errors, as there are a few empty fields, I need to retrieve them as empty or null into the...
How to click or tap on a TextView text
...k(View v) {
if ("Boiling Point K".equals(boilingpointK.getText().toString()))
boilingpointK.setText("2792");
else if ("2792".equals(boilingpointK.getText().toString()))
boilingpointK.setText("Boiling Point K");
}
});
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Convert string date to timestamp in Python
How to convert a string in the format "%d/%m/%Y" to timestamp?
14 Answers
14
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Extracting numbers from vectors of strings
I have string like this:
11 Answers
11
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Store output of subprocess.Popen call in a string
I'm trying to make a system call in Python and store the output to a string that I can manipulate in the Python program.
15...
How to escape % in String.Format?
I am storing a SQL query in my strings.xml file and I want to use String.Format to build the final string in code. The SELECT statement uses a like, something like this:
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Convert dd-mm-yyyy string to date
i am trying to convert a string in the format dd-mm-yyyy into a date object in JavaScript using the following:
14 Answers
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Given a class, see if instance has method (Ruby)
..., not just methods.
For example:
Given an instance of a class that has a String attribute first_name:
<instance>.first_name.class #=> String
<instance>.class.method_defined?(:first_name) #=> true
since first_name is both an attribute and a method (and a string of type String)...