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Redirect stdout to a file in Python?
..., lambda: file_or_fd)()
if not isinstance(fd, int):
raise ValueError("Expected a file (`.fileno()`) or a file descriptor")
return fd
@contextmanager
def stdout_redirected(to=os.devnull, stdout=None):
if stdout is None:
stdout = sys.stdout
stdout_fd = fileno(stdout)
...
What is the main difference between Inheritance and Polymorphism?
...ct.spin(); // calls A's spin, inherited by B
testObject.bad(); // compiler error, you are manipulating this as an A
Then we see that B inherits spin from A. However, when we try to manipulate the object as if it were a type A, we still get B's behavior for draw. The draw behavior is polymorphic.
...
JavaScript :How to set a Conditional Break Point in Chrome debugger tools
...debugger calls in production code. (I'm pretty sure linting will throw an error if debugger is around, but it's worth calling out whenever the topic is raised).
– Crispen Smith
Oct 18 '14 at 22:32
...
Clearing using jQuery
...
It just doesn't do anything at all - no error in firebug. I had to add control.val(''); for it to clear the file input box. Your code worked in chrome and ie9 as is though.
– mnsr
Dec 7 '12 at 3:14
...
Why does the expression 0 < 0 == 0 return False in Python?
...ression 'success' if result_code == 0 else 'failure' can be rewritten as ('error', 'success')[result_code == 0], before this I had never seen a boolean used to select an item in a list/tuple.
– Andrew Clark
May 20 '11 at 16:24
...
Converting Go struct to JSON
...ype User struct {
name string
}
func (u *User) MarshalJSON() ([]byte, error) {
return json.Marshal(&struct {
Name string `json:"name"`
}{
Name: "customized" + u.name,
})
}
func main() {
user := &User{name: "Frank"}
b, err := json.Marshal(user...
private final static attribute vs private final attribute
...estStatic();
t1.a = 10;
TestStatic t2 = new TestStatic();
t1.a = 20; // ERROR, CAN'T BE ALTERED AFTER THE FIRST INITIALIZATION.
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How to export a Vagrant virtual machine to transfer it
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// , I tried it, but I got the errors at the following link when I copied over my VirtualBoxVMs directory over to ~/VirtualBox\ VMs, and ran vagrant box list: 0bin.net/paste/iCiaqNhU-i3bbfY2#-KDiXYcRFni1RNgNJhOBrIs/…
– Nathan Basane...
Is storing a delimited list in a database column really that bad?
...f if there is a ui that handles uniqueness and data types (otherwise would error or misbehave), ui drops and creates it anyway, there is a driver table where the values come from to make them unique, field like '%P%' can be used, values being P, R, S, T, counting doesn't matter, and sorting doesn't ...
How to go up a level in the src path of a URL in HTML?
...g.
NOTE: If you are using Chrome, it may doesn't work and you will get an error that the file could not be found. I had the same problem, so I just deleted the entire cache history from chrome and it worked.
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