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How can I set NODE_ENV=production on Windows?
...em in Control Panel (or by typing 'environment' into the search box in the start menu).
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How do I measure time elapsed in Java? [duplicate]
...is rescheduled to a different core partway through, you will end up with a start timestamp from core 1 and a end timestamp from core 2 but they might not be the same time (you can even get negative values) - some examples: stackoverflow.com/questions/510462/… is a good e
– ja...
How do I measure the execution time of JavaScript code with callbacks?
...t process.hrtime(); .
So, I basically put this at the top of my app.
var start = process.hrtime();
var elapsed_time = function(note){
var precision = 3; // 3 decimal places
var elapsed = process.hrtime(start)[1] / 1000000; // divide by a million to get nano to milli
console.log(proces...
How to start new activity on button click
In an Android application, how do you start a new activity (GUI) when a button in another activity is clicked, and how do you pass data between these two activities?
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Create array of all integers between two numbers, inclusive, in Javascript/jQuery [duplicate]
...
In JavaScript ES6:
function range(start, end) {
return Array(end - start + 1).fill().map((_, idx) => start + idx)
}
var result = range(9, 18); // [9, 10, 11, 12, 13, 14, 15, 16, 17, 18]
console.log(result);
For completeness, here it is with an...
Executing Batch File in C#
...
static void ExecuteCommand(string command)
{
int exitCode;
ProcessStartInfo processInfo;
Process process;
processInfo = new ProcessStartInfo("cmd.exe", "/c " + command);
processInfo.CreateNoWindow = true;
processInfo.UseShellExecute = false;
// *** Redirect the output *...
Swift Beta performance: sorting arrays
...an in-place quicksort in Swift Beta:
func quicksort_swift(inout a:CInt[], start:Int, end:Int) {
if (end - start < 2){
return
}
var p = a[start + (end - start)/2]
var l = start
var r = end - 1
while (l <= r){
if (a[l] < p){
l += 1
...
Colon (:) in Python list index [duplicate]
...the delimiter of the slice syntax to 'slice out' sub-parts in sequences , [start:end]
[1:5] is equivalent to "from 1 to 5" (5 not included)
[1:] is equivalent to "1 to end"
[len(a):] is equivalent to "from length of a to end"
Watch https://youtu.be/tKTZoB2Vjuk?t=41m40s at around 40:00 he starts e...
Checking whether a string starts with XXXX
I would like to know how to check whether a string starts with "hello" in Python.
4 Answers
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“Cannot send session cache limiter - headers already sent” [duplicate]
...problem with sessions which is becoming very annoying. Every time I try to start a session on a particular page I get the following error:
...