大约有 30,000 项符合查询结果（耗时：0.0517秒） [XML]
Overlaying histograms with ggplot2 in R
...are visible through each other. So you probably want to use three separate calls to geom_histogram, where each one gets it's own data frame and fill:
ggplot(histogram, aes(f0)) +
geom_histogram(data = lowf0, fill = "red", alpha = 0.2) +
geom_histogram(data = mediumf0, fill = "blue", alpha...
Set initial focus in an Android application
In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing?
...
R - Markdown avoiding package loading messages
...ify the R code itself instead of the chunk options, by wrapping the source call in suppressPackageStartupMessages(), suppressMessages(), and/or suppressWarnings(). E.g:
```{r echo=FALSE}
suppressWarnings(suppressMessages(suppressPackageStartupMessages({
source("C:/Rscripts/source.R")
})
```
You c...
Proper Linq where clauses
...e just written about this...
They're different in terms of what will be called - the first is equivalent to:
Collection.Where(x => x.Age == 10)
.Where(x => x.Name == "Fido")
.Where(x => x.Fat == true)
wheras the latter is equivalent to:
Collection.Where(x => x....
PHP function to generate v4 UUID
...e PHP docs explicitly caution that mt_rand() does not generate cryptographically secure values. In other words, values generated by this function may be predictable. If you need to ensure that the UUIDs are not predictable, you should rather use Jack's solution below, which makes use of the openssl_...
How do I convert a Java 8 IntStream to a List?
...st::addAll);
In fact, this is almost exactly what Java is doing when you call .collect(Collectors.toList()) on an object stream:
public static <T> Collector<T, ?, List<T>> toList() {
return new Collectors.CollectorImpl(ArrayList::new, List::add, (var0, var1) -> {
...
Reimport a module in python while interactive
...If a module imports objects from another module using from ... import ..., calling reload() for the other module does not redefine the objects imported from it — one way around this is to re-execute the from statement, another is to use import and qualified names (module.*name*) instead.
If a modu...
How to set up a cron job to run an executable every hour?
...
cd /..path_to_shell_script
./c_executable_name
In the cron jobs list, I call the shell script.
share
|
improve this answer
|
follow
|
...
Why are my JavaScript function names clashing?
...pt. While incorrect in terms of parsing order, the code you have is semantically the same as the following since function declarations are hoisted:
function f() {
console.log("Me duplicate.");
}
var f = function() {
console.log("Me original.");
}
f();
Which in turn, with the exception o...
When do we need to set ProcessStartInfo.UseShellExecute to True?
...assumptions about what will actually be run:
// If there is an executable called "notepad.exe" somewhere on the path
// then this might not do what we expect
p.StartInfo.FileName = "notepad.exe";
p.Start();
CreateProcess is a far more precise way of starting a process - it doesn't search the...