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Asterisk in function call
...es a list as input, and expands it into actual positional arguments in the function call.
So if uniqueCrossTabs was [ [ 1, 2 ], [ 3, 4 ] ], then itertools.chain(*uniqueCrossTabs) is the same as saying itertools.chain([ 1, 2 ], [ 3, 4 ])
This is obviously different from passing in just uniqueCrossT...
What is the difference between D3 and jQuery?
...[50, 100, 150]);
// update existing nodes
binding
.style('width', function(d) { return d + 'px'; });
// create nodes for new data
binding.enter()
.append('div')
.style('width', function(d) { return d + 'px'; });
// remove nodes for discarded data
binding.exit()
.remove...
“unpacking” a tuple to call a matching function pointer
...ng number of values, which will later be used as arguments for a call to a function pointer which matches the stored types.
...
Get all child views inside LinearLayout at once
...
Get all views of a view plus its children recursively in Kotlin:
private fun View.getAllViews(): List<View> {
if (this !is ViewGroup || childCount == 0) return listOf(this)
return children
.toList()
.flatMap { it.getAllViews() }
.plus(this as View...
Adding a column to a data.frame
...onsecutive number len times
get.seq <- mapply(from, to, 1:length(from), FUN = function(x, y, z) {
len <- length(seq(from = x[1], to = y[1]))
return(rep(z, times = len))
})
# when we unlist, we get a vector
your.df$group <- unlist(get.seq)
# and append it to...
Mechanisms for tracking DB schema changes [closed]
...the team. I've faced this problem for many years, and was inspired by the functionality of Visual Studio for Database professionals. If you want an open-source tool with the same features, try this: http://dbsourcetools.codeplex.com/
Have fun,
- Nathan.
...
Difference between Visibility.Collapsed and Visibility.Hidden
...avigate o different pages and do stuff
– software is fun
Apr 30 '15 at 14:58
In Chrome, we had to use <div style="d...
Generate random password string with requirements in javascript
...Password = {
_pattern : /[a-zA-Z0-9_\-\+\.]/,
_getRandomByte : function()
{
// http://caniuse.com/#feat=getrandomvalues
if(window.crypto && window.crypto.getRandomValues)
{
var result = new Uint8Array(1);
window.crypto.getRandomValues(result);
ret...
Timertask or Handler
...
TimerTask vs Thread.sleep vs Handler postDelayed - most accurate to call function every N milliseconds?
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Maven dependency for Servlet 3.0 API?
... Why didn't it just reuse the artifactId servlet-api? Because it's fun to add <excludes> for the old artifactId (in order to prevent getting both the old and new servlet api on your classpath if one of your dependencies still depends on the old one)? :)
– Geoffrey...