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How do I check if an element is really visible with JavaScript? [duplicate]
...ay 25 '09 at 4:41
Christophe EbléChristophe Eblé
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...
How to hide a View programmatically?
...wrong boolean, try using these custom extensions:
// Example
view.hide()
fun View?.show() {
if (this == null) return
if (!isVisible) isVisible = true
}
fun View?.hide() {
if (this == null) return
if (!isInvisible) isInvisible = true
}
fun View?.gone() {
if (this == null) retu...
targetContentOffsetForProposedContentOffset:withScrollingVelocity without subclassing UICollectionVi
...answered Mar 4 '16 at 14:14
André AbreuAndré Abreu
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Understanding keystore, certificates and alias
...ed Apr 20 '11 at 2:30
Julio GorgéJulio Gorgé
10.4k22 gold badges4242 silver badges5858 bronze badges
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How to get the nth occurrence in a string?
...ered Jan 23 '13 at 13:01
Denys SéguretDenys Séguret
321k6969 gold badges680680 silver badges668668 bronze badges
...
Making an array of integers in iOS
... answered Mar 4 '14 at 15:58
Frédéric AddaFrédéric Adda
4,96033 gold badges4848 silver badges6767 bronze badges
...
Aggregate / summarize multiple variables per group (e.g. sum, mean)
...
Where is this year() function from?
You could also use the reshape2 package for this task:
require(reshape2)
df_melt <- melt(df1, id = c("date", "year", "month"))
dcast(df_melt, year + month ~ variable, sum)
# year month x1 ...
How to check if one of the following items is in a list?
...It's nearly the same as the one I posted.
– Bastien Léonard
Apr 11 '09 at 16:24
5
@BastienLéona...
Grep not as a regular expression
...swered Jun 3 '16 at 14:13
Aloïké GoAloïké Go
40944 silver badges33 bronze badges
...
CHECK constraint in MySQL is not working
...B (see this answer stackoverflow.com/a/44333349).
– Jérôme
Feb 2 '18 at 10:47
@Jérôme I know, I have some (more re...