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How do I increase the scrollback buffer in a running screen session?
...an page explains that you can enter command line mode in a running session by typing Ctrl+A, :, then issuing the scrollback <num> command.
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Sorting an ArrayList of objects using a custom sorting order
...u need to let Contact implement Comparable. Assuming that you want to sort by default on name, then do (nullchecks omitted for simplicity):
public class Contact implements Comparable<Contact> {
private String name;
private String phone;
private Address address;
public int co...
LINQ order by null column where order is ascending and nulls should be last
I'm trying to sort a list of products by their price.
10 Answers
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How can I remove duplicate rows?
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Assuming no nulls, you GROUP BY the unique columns, and SELECT the MIN (or MAX) RowId as the row to keep. Then, just delete everything that didn't have a row id:
DELETE FROM MyTable
LEFT OUTER JOIN (
SELECT MIN(RowId) as RowId, Col1, Col2, Col3
F...
GitHub - List commits by author
Is there any way on GitHub to list all commits made by a single author, in the browser (neither locally, e.g. via git log , nor via the API)?
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Purpose of returning by const value? [duplicate]
...erform a potentially expensive non-const operation on an object, returning by const-value prevents you from accidentally calling this operation on a temporary. Imagine that + returned a non-const value, and you could write:
(a + b).expensive();
In the age of C++11, however, it is strongly advised...
Is there a generator version of `string.split()` in Python?
...rsion of str.split()
:param source:
source string (unicode or bytes)
:param sep:
separator to split on.
:param regex:
if True, will treat sep as regular expression.
:returns:
generator yielding elements of string.
"""
if sep is None:
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How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
...ed" state.
For a stateful protocol (like TCP), a connection is identified by a 4-tuple consisting of source and destination ports and source and destination IP addresses. So, if two different machines connect to the same port on a third machine, there are two distinct connections because the sourc...
python list by value not by reference [duplicate]
... a general understanding, it seems to be like the same problem encountered by the op at the second layer. How does it work internally?
– AsheKetchum
Feb 21 '17 at 15:59
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Ship an application with a database
...database has a lot of tables and other components. Upgrades are triggered by changing the database version number in the res/values/strings.xml file. Upgrades would then be accomplished by creating a new database externally, replacing the old database in the assets folder with the new database, sav...