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How to find where a method is defined at runtime?
...dities in Rails' library loading, it only occurred when we ran it directly from Mongrel in production mode.
10 Answers
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How to secure MongoDB with username and password
...remote access will ask for the user name & password. I tried the tutorial from the MongoDB site and did following:
15 Answ...
Convert string in base64 to image and save on filesystem in Python
...odernizing this example to Python 3, which removed arbitrary codec support from string/bytes .encode() and .decode() functions:
# For both Python 2.7 and Python 3.x
import base64
with open("imageToSave.png", "wb") as fh:
fh.write(base64.decodebytes(img_data))
...
HashMap with multiple values under the same key
...dd(new Person("Bob Jones"));
peopleByForename.put("Bob", people);
// read from it
List<Person> bobs = peopleByForename["Bob"];
Person bob1 = bobs[0];
Person bob2 = bobs[1];
The disadvantage with this approach is that the list is not bound to exactly two values.
2. Using wrapper class
// d...
How to scp in Python?
...ramiko. It's very easy to use. See the following example:
import paramiko
from scp import SCPClient
def createSSHClient(server, port, user, password):
client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.co...
Input from the keyboard in command line application
...
The correct way to do this is to use readLine, from the Swift Standard Library.
Example:
let response = readLine()
Will give you an Optional value containing the entered text.
share
|...
Should I declare Jackson's ObjectMapper as a static field?
...
Yes, that is safe and recommended.
The only caveat from the page you referred is that you can't be modifying configuration of the mapper once it is shared; but you are not changing configuration so that is fine. If you did need to change configuration, you would do that from ...
ssh remote host identification has changed
...
ssh-keygen -R <host>
For example,
ssh-keygen -R 192.168.3.10
From ssh-keygen man page:
-R hostname Removes all keys belonging to hostname from a known_hosts file. This option is useful to delete hashed hosts (see the -H option above).
...
What is a raw type and why shouldn't we use it?
... raw type.
A non-static member type of a raw type R that is not inherited from a superclass or superinterface of R.
Here's an example to illustrate:
public class MyType<E> {
class Inner { }
static class Nested { }
public static void main(String[] args) {
MyType mt;...
How to grant remote access permissions to mysql server for user?
...
This grants root access with the same password from any machine in *.example.com:
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%.example.com'
IDENTIFIED BY 'some_characters'
WITH GRANT OPTION;
FLUSH PRIVILEGES;
If name resolution is not going to work, you may also ...