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How do you run CMD.exe under the Local System Account?
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I just tried on Vista x64 and got "The PsExec service running on ... is an incompatible version." Tried direct from \\live.sysinternals.com\tools\psexec and latest binary. There doesn't seem to be x64 version
– ZXX
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Update R using RStudio
...ren't already in the destination directory. i.e. don't overwrite your new 'base' package with your old one - if you did, don't worry, we'll fix it in the next step anyway. If those paths don't work for you, try using installed.packages()
to find the proper pathnames.]
now you can update your package...
How do I replace NA values with zeros in an R dataframe?
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The dplyr hybridized options are now around 30% faster than the Base R subset reassigns. On a 100M datapoint dataframe mutate_all(~replace(., is.na(.), 0)) runs a half a second faster than the base R d[is.na(d)] <- 0 option. What one wants to avoid specifically is using an ifelse() or ...
Check play state of AVPlayer
...timeControlStatus
For example, this function plays or pauses the avPlayer based on it's status and updates the play/pause button appropriately.
@IBAction func btnPlayPauseTap(_ sender: Any) {
if aPlayer.timeControlStatus == .playing {
aPlayer.pause()
btnPlay.setImage(UIImage(na...
What would be C++ limitations compared C language? [closed]
...ally incompatible forks of Python to add objects, one with an object model based on Smalltalk, the other with a class system based on Simula. Then Guido continued to improve Python focussing its core use. That's closer to the C/Objective C/C++ situation.
– Pete Kirkham
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CSS: How to position two elements on top of each other, without specifying a height?
...ut descendants, into the same row and column.
Please check example below, based on Your HTML. I added only <span> and some colors, so You can see the result.
You can also easily change z-index each of descendant elements, to manipulate its visibility (which one should be on top).
.cont...
How to read a single char from the console in Java (as the user types it)?
...le input in Python and Java. Excerpt:
If your program must be console based,
you have to switch your terminal out
of line mode into character mode, and
remember to restore it before your
program quits. There is no portable
way to do this across operating
systems.
One of the sugges...
How do you specify that a class property is an integer?
... there is a bug in the VS plugin that is suggesting invalid types, perhaps based on the ECMA 262 list of reserved keywords (which includes "int")
– Josh
Oct 15 '12 at 21:09
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Javascript: Extend a Function
... javascript extension.
First let us extend javascript function.
function Base(props) {
const _props = props
this.getProps = () => _props
// We can make method private by not binding it to this object.
// Hence it is not exposed when we return this.
const privateMethod = ()...
Fast stable sorting algorithm implementation in javascript
...lyfill to implement a stable sort regardless of the native implementation, based on the assertion made in this answer:
// ECMAScript 5 polyfill
Object.defineProperty(Array.prototype, 'stableSort', {
configurable: true,
writable: true,
value: function stableSort (compareFunction) {
...