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How to exit from PostgreSQL command line utility: psql
...curiosity:
Ctrl+D - this sends the EOF character. EOF stands for "end of file". In this concrete case it exits from the psql subprogram, as the shell is waiting for user input. This should not be 'the way to go' as it is not working if:
any other character is entered before - try entering some w...
Java Multiple Inheritance
...llection of IFliers, and can use all the other advantages of polymorphism, etc.
However you also have all the flexibility from Composition. You can apply as many different interfaces and composite backing class as you like to each type of Animal - with as much control as you need over how each bit ...
Get all object attributes in Python? [duplicate]
Is there a way to get all attributes/methods/fields/etc. of an object in Python?
4 Answers
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How to force cp to overwrite without confirmation
...yy, but my gutfeeling says that if you do it as root - your .bashrc or .profile has an alias of cp to cp -i, most modern systems (primarily RH-derivatives) do that to root profiles.
You can check existing aliases by running alias at the command prompt, or which cp to check aliases only for cp.
If...
What exactly is Java EE?
...ed application servers, like WildFly, TomEE, GlassFish, Liberty, WebLogic, etc. There are also servlet containers which implement only the JSP/Servlet part of the huge Java EE API, such as Tomcat, Jetty, etc.
We, Java EE developers, should write code utilizing the specification (i.e. import only jav...
How do you parse and process HTML/XML in PHP?
...ample can be found at A simple program to CRUD node and node values of xml file and there is lots of additional examples in the PHP Manual.
3rd Party Libraries (libxml based)
If you prefer to use a 3rd-party lib, I'd suggest using a lib that actually uses DOM/libxml underneath instead of string ...
Why are joins bad when considering scalability?
...s certainly not just to store structured data (you could do that with flat file constructs like csv or xml). A few of the options I listed will even let you completely build your join in advance, so the results are already done before you issue the query — just as if you had denormalized the data ...
Working with time DURATION, not time of day
... The problem is I don't want a formula. I can calculate the days hours etc and produce a "string" value, but that is what it is. A string value. I want the underlying cell value to be a decimal number and only display it as days:hours:mins. I need a display format string but not a formula.
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Implicit “Submit” after hitting Done on the keyboard at the last EditText
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In your XML file inside your edittext tag add below snippet
android:imeOptions="actionDone"
Then inside your Java class, write the below code
editText.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
...
Short description of the scoping rules?
...r to outer
Global (module) — Names assigned at the top-level of a module file, or by executing a global statement in a def within the file
Built-in (Python) — Names preassigned in the built-in names module: open, range, SyntaxError, etc
So, in the case of
code1
class Foo:
code2
def sp...