I’ve got some Python code that runs through a list of strings and converts them to integers or floating point numbers if possible. Doing this for integers is pretty easy if element.isdigit(): newelement = int(element) Floating point numbers are more difficult. Right now I’m using partition(‘.’) to split the string and checking to make sure … Read more
I am trying to do something like this: QString string; // do things… std::cout << string << std::endl; but the code doesn’t compile. How to output the content of qstring into the console (e.g. for debugging purposes or other reasons)? How to convert QString to std::string? 10 Answers 10
I have the following DataFrame from a SQL query: (Pdb) pp total_rows ColumnID RespondentCount 0 -1 2 1 3030096843 1 2 3030096845 1 and I want to pivot it like this: total_data = total_rows.pivot_table(cols=[‘ColumnID’]) (Pdb) pp total_data ColumnID -1 3030096843 3030096845 RespondentCount 2 1 1 [1 rows x 3 columns] total_rows.pivot_table(cols=[‘ColumnID’]).to_dict(‘records’)[0] {3030096843: 1, 3030096845: 1, … Read more
How do you convert a data frame column to a numeric type? 18 Answers 18
I just created sample BB app, which can allow to choose the date. DateField curDateFld = new DateField(“Choose Date: “, System.currentTimeMillis(), DateField.DATE | DateField.FIELD_LEFT); After choosing the date, I need to convert that long value to String, so that I can easily store the date value somewhere in database. I am new to Java and … Read more
How can I convert a String such as “12.34” to a double in Java? 14 Answers 14
I’d like to set a property of an object through Reflection, with a value of type string. So, for instance, suppose I have a Ship class, with a property of Latitude, which is a double. Here’s what I’d like to do: Ship ship = new Ship(); string value = “5.5”; PropertyInfo propertyInfo = ship.GetType().GetProperty(“Latitude”); propertyInfo.SetValue(ship, … Read more
I’m trying to convert a string returned from flag.Arg(n) to an int. What is the idiomatic way to do this in Go? 5 Answers 5
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I am trying to change a column from a varchar(50) to a nvarchar(200). What is the SQL command to alter this table? 10 Answers 10
