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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...n [58]: x=np.arange(16).reshape((4,4))
In [59]: z=x[(1,3),:][:,(1,3)]
In [60]: z
Out[60]:
array([[ 5, 7],
[13, 15]])
In [61]: z[0,0]=0
Note that x is unchanged:
In [62]: x
Out[62]:
array([[ 0, 1, 2, 3],
[ 4, 5, 6, 7],
[ 8, 9, 10, 11],
[12, 13, 14, 15]])
I...
When do items in HTML5 local storage expire?
...m Post♦
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answered Aug 11 '11 at 3:12
huyzhuyz
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Programmatically creating Markdown tables in R with KnitR
... 3.20 1.30
4 4.60 3.10 1.50
5 5.00 3.60 1.40
6 5.40 3.90 1.70 ...
Dynamically update values of a chartjs chart
...tStroke:!0,datasetStrokeWidth:2,datasetFill:!0,animation:!0,animationSteps:60,animationEasing:"easeOutQuart",onAnimationComplete:null};var b=c?y(r.Radar.defaults,c):r.Radar.defaults;return new H(a,b,s)};this.Pie=function(a,
c){r.Pie.defaults={segmentShowStroke:!0,segmentStrokeColor:"#fff",segmentStr...
How do I change the color of radio buttons?
...
FredFred
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...
When to use enumerateObjectsUsingBlock vs. for
...
bbumbbum
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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 {
...