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How do I get the number of days between two dates in JavaScript?
...
Steps
Set start date
Set end date
Calculate difference
Convert milliseconds to days
Native JS
const startDate = '2020-01-01';
const endDate = '2020-03-15';
const diffInMs = new Date(endDate) - new Date(startDate)
const diffInDays = diffInMs / (1000 * 60 * 60 * 24);
Comm...
What does Serializable mean?
...be turned into a byte-stream (for example, to be saved to a file) and then converted back into classes again. This reloading could happen in a different instance of the program, or even on a different machine. Serialisation (in any language) involves all sorts of issues, though, especially when you'...
What is the difference between tinyint, smallint, mediumint, bigint and int in MySQL?
...nyint data types. Values are inserted into each column and returned in the SELECT statement.
CREATE TABLE dbo.MyTable
(
MyBigIntColumn bigint
,MyIntColumn int
,MySmallIntColumn smallint
,MyTinyIntColumn tinyint
);
GO
INSERT INTO dbo.MyTable VALUES (9223372036854775807, 214483647,32767,255);...
Ruby: extend self
...he code is easier to test, mock, and stub, and it’s still dead simple to convert into a proper class should the need arise.
(( copyright ought ten chris wanstrath ))
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How do I scroll the UIScrollView when the keyboard appears?
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It's good to convert activeField.frame to relative frame as activeField doesn't have to be an immediate child to self.view. Updated code should look something like: CGRect aRect = self.view.frame; aRect.size.height -= kbSize.height; CGRe...
Exact difference between CharSequence and String in java [duplicate]
...SR 378 again…
Using "one-dimensional" string literals.
String query = "SELECT \"EMP_ID\", \"LAST_NAME\" FROM \"EMPLOYEE_TB\"\n" +
"WHERE \"CITY\" = 'INDIANAPOLIS'\n" +
"ORDER BY \"EMP_ID\", \"LAST_NAME\";\n";
Using a "two-dimensional" block of text
String query =...
Insert ellipsis (…) into HTML tag if content too wide
...t;= high) {
mid = ~ ~((low + high) / 2); //~~ is a fast way to convert something to an int
var result = func(mid);
if (result < 0) {
high = mid - 1;
} else if (result > 0) {
low = mid + 1;
} else {
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Regular expression search replace in Sublime Text 2
... anemic. Specifically, I want to do a replace on groups, so something like converting this text:
6 Answers
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Is there a timeout for idle PostgreSQL connections?
...ement an idle connection reaper. Have a cron job run something like this:
SELECT pg_terminate_backend(pid)
FROM pg_stat_activity
WHERE datname = 'regress'
AND pid <> pg_backend_pid()
AND state = 'idle'
AND state_change < current_timestamp - INTERVAL '5' MINUTE;
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How to drive C#, C++ or Java compiler to compute 1+2+3+…+1000 at compile time?
...oduces the following compilation error:
Constant value '500500' cannot be converted to a 'char'
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