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Selecting multiple columns in a pandas dataframe
...
The column names (which are strings) cannot be sliced in the manner you tried.
Here you have a couple of options. If you know from context which variables you want to slice out, you can just return a view of only those columns by passing a list into the...
Does Dart support enumerations?
...
how about this approach:
class FruitEnums {
static const String Apple = "Apple";
static const String Banana = "Banana";
}
class EnumUsageExample {
void DoSomething(){
var fruit = FruitEnums.Apple;
String message;
switch(fruit){
case(FruitEnums.Apple):
...
How do I load a PHP file into a variable?
...ile without running it through the webserver, the following should work.
$string = eval(file_get_contents("file.php"));
This will load then evaluate the file contents. The PHP file will need to be fully formed with <?php and ?> tags for eval to evaluate it.
...
Kill some processes by .exe file name
... recent methods from the C# 8 (Async Enumerables), then check this:
const string processName = "chromedriver"; // without '.exe'
await Process.GetProcesses()
.Where(pr => pr.ProcessName == processName)
.ToAsyncEnumerable()
.ForEachAsync(p => p.Kill());
...
How to detect internet speed in JavaScript?
...ShowProgressMessage(msg) {
if (console) {
if (typeof msg == "string") {
console.log(msg);
} else {
for (var i = 0; i < msg.length; i++) {
console.log(msg[i]);
}
}
}
var oProgress = document.get...
Post an empty body to REST API via HttpClient
...
Use StringContent or ObjectContent which derive from HttpContent or you can use null as HttpContent:
var response = await client.PostAsync(requestUri, null);
...
How can I respond to the width of an auto-sized DOM element in React?
...component: ReactClass<any>,
};
type Props = {
domProps?: Array<string>,
computedStyleProps?: Array<string>,
children: (state: State) => ?React.Element<any>,
component: ReactClass<any>,
};
type State = {
remeasure: () => void,
computedStyle?: Object,
...
Is it possible to have a multi-line comments in R? [duplicate]
...
You can, if you want, use standalone strings for multi-line comments — I've always thought that prettier than if (FALSE) { } blocks. The string will get evaluated and then discarded, so as long as it's not the last line in a function nothing will happen.
"Thi...
Measuring code execution time
...rick on it to get the miliseconds out of picture. this way watch.Elapsed.ToString().Split('.')[0]
– Doruk
Sep 7 '16 at 7:50
3
...
Try-finally block prevents StackOverflowError
...en when it cannot happen.
public class Main
{
public static void main(String[] args)
{
try
{ // invoke foo() with a simulated call depth
Main.foo(1,5);
}
catch(Exception ex)
{
System.out.println(ex.toString());
}
...