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Difference between JSONObject and JSONArray
...frences between JSON object and JSON array:
Link to Tabular Difference : https://i.stack.imgur.com/GIqI9.png
JSON Array
1. Arrays in JSON are used to organize a collection of related items
(Which could be JSON objects)
2. Array values must be of type string, number, object, array, boolean or...
UITableView - change section header color
...tView.backgroundColor = [UIColor blackColor];
}
Taken from my post here:
https://happyteamlabs.com/blog/ios-how-to-customize-table-view-header-and-footer-colors/
Swift 3 / 4
func tableView(_ tableView: UITableView, willDisplayHeaderView view: UIView, forSection section: Int){
view.tintColor ...
How to get the data-id attribute?
...(this).find(':selected').data("year"));
});
Here is the working example: https://jsfiddle.net/ed5axgvk/1/
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python date of the previous month
...today.
when = datetime.datetime.today()
# Find previous month: https://stackoverflow.com/a/9725093/564514
# Find today.
first = datetime.date(day=1, month=when.month, year=when.year)
# Use that to find the first day of this month.
prev_month_end = first - datetime.timedel...
How to write file if parent folder doesn't exist?
...creates all missing directories for you.
This module does what you want: https://npmjs.org/package/writefile . Got it when googling for "writefile mkdirp". This module returns a promise instead of taking a callback, so be sure to read some introduction to promises first. It might actually complica...
How to create REST URLs without verbs?
...ber that POST does not necessarily have to use Content-Type: application/x-www-form-urlencoded. This could just as easily be a JSON or CSV payload.
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Delete duplicate rows from small table
...ename) t
WHERE t.rnum > 1);
provided by Postgres wiki:
https://wiki.postgresql.org/wiki/Deleting_duplicates
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Use CSS to automatically add 'required field' asterisk to form inputs
...ss="required">Name:</label>
<input type="text">
See https://developer.mozilla.org/en-US/docs/Web/CSS/pseudo-elements
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What is the best way to tell if a character is a letter or number in Java without using regexes?
...space
if ((ch == ' ') || (ch =='\n') || (ch == '\t'))
// ...
Source: https://docs.oracle.com/javase/tutorial/i18n/text/charintro.html
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C++, copy set to vector
...
back_inserter may be used but it will invoke push_back() on the vector
(https://en.cppreference.com/w/cpp/iterator/back_insert_iterator).
emplace_back() is more efficient because it avoids creating a temporary when using push_back(). It is not a problem with trivially
constructed types but will b...