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List of foreign keys and the tables they reference
... skip 2 on constraint_name on r_table_name skip 1
column CHILDCOL format a60 head 'CHILD COLUMN'
column PARENTCOL format a60 head 'PARENT COLUMN'
column constraint_name format a30 head 'FK CONSTRAINT NAME'
column delete_rule format a15
column bt noprint
column bo noprint
TTITLE LEFT _DATE CENTER '...
Insert line break inside placeholder attribute of a textarea?
...;Third line"></textarea>
Works on:
Chrome 62, IE10, Firefox 60
Doesn't work on:
Safari 11
https://jsfiddle.net/lu1s/bxkjLpag/2/
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What does `kill -0 $pid` in a shell script do?
...he process if it exists and accepts signals from
# the current user.
sleep 60 &
pid=$!
kill -0 $pid && kill $pid
# Check if a PID exists. When missing, this should result
# in output similar to:
# bash: kill: (6228) - No such process
# Exit status: 1
kill -0 $pid; echo "Exit statu...
UITableView load more when scrolling to bottom like Facebook application
...View, spacingFromLastCell: 10, spacingFromLastCellWhenLoadMoreActionStart: 60)
handling
extension ViewController: UITableViewDelegate {
func scrollViewDidScroll(_ scrollView: UIScrollView) {
activityIndicator.start {
DispatchQueue.global(qos: .utility).async {
...
Get time difference between two dates in seconds
...need the hour / minute time differences as well...? Should I devided it by 60 or multiple of it...? @Juan
– gumuruh
Mar 15 '17 at 9:39
...
Strange \n in base64 encoded string in Ruby
...hat confusing, the b64encode method is supposed to add a newline for every 60th character, and the example for the encode64 method is actually using the b64encode method.
It seems the pack("m") method for the Array class used by encode64 also adds the newlines. I would consider it a design bug that...
What is the best way to paginate results in SQL Server
...
@user960567: In terms of performance, keyset paging will always beat offset paging, no matter whether you implement offset paging with the SQL standard OFFSET .. FETCH, or with previous ROW_NUMBER() tricks.
– ...
How to set HTTP headers (for cache-control)?
... file to cache, use:
header("Cache-Control: max-age=2592000"); //30days (60sec * 60min * 24hours * 30days)
?>
Note that the exact headers used will depend on your needs (and if you need to support HTTP 1.0 and/or HTTP 1.1)
...
SQL to determine minimum sequential days of access?
...ys int
DECLARE @seconds bigint
SET @days = 30
SET @seconds = (@days * 24 * 60 * 60) - 1
SELECT DISTINCT UserId
FROM (
SELECT uh1.UserId, Count(uh1.Id) as Conseq
FROM UserHistory uh1
INNER JOIN UserHistory uh2 ON uh2.CreationDate
BETWEEN uh1.CreationDate AND
DATEADD(...
Calculating frames per second in a game
...eue data structure which held the rendering times for each of the last 30, 60, 100, or what-have-you frames (you could even design it so the limit was adjustable at run-time). To determine a decent fps approximation you can determine the average fps from all the rendering times in the queue:
fps = ...