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Get name of current script in Python
...
import sys
print sys.argv[0]
This will print foo.py for python foo.py, dir/foo.py for python dir/foo.py, etc. It's the first argument to python. (Note that after py2exe it would be foo.exe.)
sha...
How to obtain the query string from the current URL with JavaScript?
...d turn them into a handy URLSearchParams object.
let paramsString = "name=foo&age=1337"
let searchParams = new URLSearchParams(paramsString);
searchParams.has("name") === true; // true
searchParams.get("age") === "1337"; // true
Notice that the browser support is still limited on this interf...
How to get names of enum entries?
...s of the enum members. For example, the following code:
enum myEnum { bar, foo }
for (var enumMember in myEnum) {
console.log("enum member: ", enumMember);
}
Will print the following:
Enum member: 0
Enum member: 1
Enum member: bar
Enum member: foo
If you instead want only the member names, and...
Find all elements on a page whose element ID contains a certain text using jQuery
...
This selects all DIVs with an ID containing 'foo' and that are visible
$("div:visible[id*='foo']");
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How can I trim leading and trailing white space?
...\n being in the covered character class. trimws("SELECT\n blah\n FROM foo;") still contains newlines.
– Jubbles
Dec 31 '15 at 1:10
...
“Private” (implementation) class in Python
... create pseudo-privacy by prefacing the method with two underscores (eg: __foo). You cannot access the method directly, but you can still call it through a special prefix using the classname (eg: _classname__foo). So the best you can do is indicate/suggest privacy, not enforce it.
Python is like p...
Disable individual Python unit tests temporarily
...e unittest.skip decorator.
@unittest.skip("reason for skipping")
def test_foo():
print('This is foo test case.')
@unittest.skip # no reason needed
def test_bar():
print('This is bar test case.')
For other options, see the docs for Skipping tests and expected failures.
...
What does the unary plus operator do?
...ng that an integer is positive. Consider the following C++ program:
void foo(unsigned short x)
{
std::cout << "x is an unsigned short" << std::endl;
}
void foo(int x)
{
std::cout << "x is an int" << std::endl;
}
int main()
{
unsigned short x = 5;
foo(+x);
}
This wil...
What does the [Flags] Enum Attribute mean in C#?
...
[Flags]
public enum MyFlags : short
{
Foo = 0x1,
Bar = 0x2,
Baz = 0x4
}
static void Main(string[] args)
{
MyFlags fooBar = MyFlags.Foo | MyFlags.Bar;
if ((fooBar & MyFlags.Foo) == MyFla...
ruby system command check exit code
...d execution fails.
system("unknown command") #=> nil
system("echo foo") #=> true
system("echo foo | grep bar") #=> false
Furthermore
An error status is available in $?.
system("VBoxManage createvm --invalid-option")
$? #=> #<Process::Status: pid 9...