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JavaScript global event mechanism
... be
// supported in every browser. It worked for me in Chrome.
var extra = !col ? '' : '\ncolumn: ' + col;
extra += !error ? '' : '\nerror: ' + error;
// You can view the information in an alert to see things working like this:
alert("Error: " + msg + "\nurl: " + url + "\nline: " +...
Escape angle brackets in a Windows command prompt
I need to echo a string containing angle brackets (< and >) to a file on a Windows machine. Basically what I want to do is the following:
echo some string < with angle > brackets >>myfile.txt
...
Type erasure techniques
...oid>)> call;
call = reinterpret_cast<voidFun>(fun<std::string>);
call(std::make_shared<std::string>("Hi there!"));
call = reinterpret_cast<voidFun>(fun<int>);
call(std::make_shared<int>(33));
call = reinterpret_cast<voidFun>(fun&...
Javascript Shorthand for getElementById
...
To save an extra character you could pollute the String prototype like this:
pollutePrototype(String, '绎', {
configurable: false, // others must fail
get: function() {
return document.getElementById(this);
},
set: function(element) {
eleme...
getMinutes() 0-9 - How to display two digit numbers?
... "If getMinutes() is less than 10, return a 0, if greater, return an empty string.
– Michael Giovanni Pumo
Aug 17 '16 at 10:30
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“Deprecation warning: moment construction falls back to js Date” when trying to convert RFC2822 date
...rning, you need to either:
Pass in an ISO formatted version of your date string:
moment('2014-04-23T09:54:51');
Pass in the string you have now, but tell Moment what format the string is in:
moment('Wed, 23 Apr 2014 09:54:51 +0000', 'ddd, DD MMM YYYY HH:mm:ss ZZ');
Convert your string to a JavaS...
Calculate the median of a billion numbers
...AM of some smartphones.
public class Median {
public static void main(String[] args) {
long start = System.currentTimeMillis();
int[] numbers = new int[1_000_000_000];
System.out.println("created array after " + (System.currentTimeMillis() - start) + " ms");
...
How to add extra info to copied web text
...nswer: [stackoverflow.com/a/4177234/4177020] And now you can replace this string var selection = window.getSelection(); by this one: var selection = getSelectionHtml();
– Dzmitry Kulahin
Oct 2 '19 at 16:08
...
Removing duplicate values from a PowerShell array
...put:
Apples
Banana
This uses the Property parameter to first Trim() the strings, so extra spaces are removed and then selects only the -Unique values.
More info on Sort-Object:
Get-Help Sort-Object -ShowWindow
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How can I pass a member function where a free function is expected?
...n<void(int, int)> fun)
{
fun(1, 1);
}
int main (int argc, const char * argv[])
{
...
aClass a;
auto fp = std::bind(&aClass::test, a, _1, _2);
function1(fp);
return 0;
}
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