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MySQL Data - Best way to implement paging?
...pared statements).
With two arguments, the first argument specifies the offset of the first row to return, and the second specifies the maximum number of rows to return. The offset of the initial row is 0 (not 1):
SELECT * FROM tbl LIMIT 5,10; # Retrieve rows 6-15
To retrieve all rows from a certa...
DBMS_OUTPUT.PUT_LINE not printing
...nd, have the ability to do so. In SQL*Plus, you'd need to use the command set serveroutput on [size N|unlimited]. So you'd do something like
SQL> set serveroutput on size 30000;
SQL> exec print_actor_quotes( <<some value>> );
In SQL Developer, you'd go to View | DBMS Output to...
Rotating a two-dimensional array in Python
In a program I'm writing the need to rotate a two-dimensional array came up. Searching for the optimal solution I found this impressive one-liner that does the job:
...
Listening for variable changes in JavaScript
...an old thread but now this effect is possible using accessors (getters and setters): https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects#Defining_getters_and_setters
You can define an object like this, in which aInternal represents the field a:
x = {
aInternal: 10,...
How to calculate the number of occurrence of a given character in each row of a column of strings?
I have a data.frame in which certain variables contain a text string. I wish to count the number of occurrences of a given character in each individual string.
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How to handle Handler messages when activity/fragment is paused
...stanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
@Override
public void onResume() {
super.onResume();
handler.setActivity(getActivity());
handler.resume();
}
...
CSS content generation before or after 'input' elements [duplicate]
In Firefox 3 and Google Chrome 8.0 the following works as expected:
5 Answers
5
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SQL - find records from one table which don't exist in another
I've got the following two SQL tables (in MySQL):
8 Answers
8
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Count number of occurrences of a given substring in a string
How can I count the number of times a given substring is present within a string in Python?
35 Answers
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When is it practical to use Depth-First Search (DFS) vs Breadth-First Search (BFS)? [closed]
..., visited): # DFS from origin, with already-visited set:
visited.add(node) # Mark the origin as visited
for neighbor in node.neighbors: # Loop over the neighbors
if not neighbor in visited: # If the neighbor hasn't...