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BigDecimal setScale and round
...of your BigDecimal getting set? How are you outputting the value (using a String.format() might hide significant digits)?
– dale peters
Oct 25 '16 at 14:58
...
Is there a destructor for Java?
... System.out.println("closing...");
}
public static void main(String[] args) {
try (Closeable c = new Closeable()) {
System.out.println("trying...");
throw new Exception("throwing...");
}
catch (Exception e) {
System.out.prin...
What is the difference between “instantiated” and “initialized”?
...are value types. In contrast, any class you create is a reference type. C# strings are also a reference type. Most things in the .NET framework are reference types.
Parts of a Variable
There is the variable name and it's value. Two parts.
The variable's name is what you declare it to be. The valu...
Java and SQLite [closed]
...mport java.sql.Statement;
public class Test {
public static void main(String[] args) throws Exception {
Class.forName("org.sqlite.JDBC");
Connection conn = DriverManager.getConnection("jdbc:sqlite:test.db");
Statement stat = conn.createStatement();
stat.executeUp...
What is the Oracle equivalent of SQL Server's IsNull() function?
...C> COALESCE-- this same syntax works on Oracle. If your data has empty strings instead of NULLS you might need something like this: COALESCE(TRIM(Tbl.myField1), TRIM(Tbl.myField2)) AS "myNewField".
– SherlockSpreadsheets
May 1 '19 at 16:33
...
What is the difference between t.belongs_to and t.references in rails?
...
column("#{col}_id", :integer, options)
column("#{col}_type", :string, polymorphic.is_a?(Hash) ? polymorphic : options) unless polymorphic.nil?
end
end
alias :belongs_to :references
This is just a way of making your code more readable -- it's nice to be able to put belongs_to i...
Outputting data from unit test in python
...u might deal with more complex data, that can't easily be represented as a string.
14 Answers
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Rails: Logging the entire stack trace of an exception
.... While the logger itself is thread safe. Usually I join my message in one string then log it.
– Morozov
Dec 15 '15 at 10:31
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When is it appropriate to use C# partial classes?
...ter the Form1 Constructor and try to compile the code
partial void Ontest(string s);
Here are some points to consider while implementing partial classes:-
Use partial keyword in each part of partial class.
The name of each part of partial class should be the same but the source file name for e...
How does a debugger work?
...t can acertain what might be in the memory, with contents of ints, floats, strings, etc.). Like the first poster said, this information and how these symbols work greatly depends on the environment and the language.
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