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Checking for a null int value from a Java ResultSet
...et#getObject(). Substitute -1 with whatever null-case value you want.
int foo = resultSet.getObject("foo") != null ? resultSet.getInt("foo") : -1;
Or, if you can guarantee that you use the right DB column type so that ResultSet#getObject() really returns an Integer (and thus not Long, Short or By...
Why does PHP 5.2+ disallow abstract static class methods?
... might expect:
<?php
abstract class ParentClass {
static function foo() {
echo "I'm gonna do bar()";
self::bar();
}
abstract static function bar();
}
class ChildClass extends ParentClass {
static function bar() {
echo "Hello, World!";
}
}
ChildClas...
What is the quickest way to HTTP GET in Python?
...mport urllib.request
contents = urllib.request.urlopen("http://example.com/foo/bar").read()
Python 2:
import urllib2
contents = urllib2.urlopen("http://example.com/foo/bar").read()
Documentation for urllib.request and read.
...
Accessing dict keys like an attribute?
I find it more convenient to access dict keys as obj.foo instead of obj['foo'] , so I wrote this snippet:
27 Answers
...
How to create a custom attribute in C#
...d, property, ...) with this attribute:
[MyCustomAttribute(SomeProperty = "foo bar")]
public class Foo
{
}
and finally you would use reflection to fetch it:
var customAttributes = (MyCustomAttribute[])typeof(Foo).GetCustomAttributes(typeof(MyCustomAttribute), true);
if (customAttributes.Length &...
Best way to load module/class from lib folder in Rails 3?
...So in case you try to put into lib/my_stuff/bar.rb something like:
module Foo
class Bar
end
end
It will not be loaded automagically. Then again if you rename the parent dir to foo thus hosting your module at path: lib/foo/bar.rb. It will be there for you. Another option is to name the file yo...
How to get the last N records in mongodb?
... you have some id or date field called "x" you would do ...
.sort()
db.foo.find().sort({x:1});
The 1 will sort ascending (oldest to newest) and -1 will sort descending (newest to oldest.)
If you use the auto created _id field it has a date embedded in it ... so you can use that to order by .....
App Inventor 2 CustomWebView 拓展：高级版Web浏览器，完美浏览现代Web前...
...馈（300字以内）： 给个鼓励也行呐~o~ 提供截图（仅截取当前可视区域） delete edit 高亮或隐藏信息 提交 function HideORDispFeedback() { $("#feedback").toggl...
Python argparse ignore unrecognised arguments
...
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--foo')
args, unknown = parser.parse_known_args(['--foo', 'BAR', 'spam'])
print(args)
# Namespace(foo='BAR')
print(unknown)
# ['spam']
share
...
What is the difference between a 'closure' and a 'lambda'?
...n most people think of functions, they think of named functions:
function foo() { return "This string is returned from the 'foo' function"; }
These are called by name, of course:
foo(); //returns the string above
With lambda expressions, you can have anonymous functions:
@foo = lambda() {ret...