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MySQL - length() vs char_length()
What's the main difference between length() and char_length() ?
2 Answers
2
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How do I compare two strings in Perl?
...fied by the current locale if a legacy use locale (but not use locale ':not_characters') is in effect. See perllocale. Do not mix these with Unicode, only with legacy binary encodings. The standard Unicode::Collate and Unicode::Collate::Locale modules offer much more powerful solutions to collation ...
Scatterplot with too many points
...;- data.frame(x = rnorm(5000),y=rnorm(5000))
ggplot(df,aes(x=x,y=y)) + geom_point(alpha = 0.3)
Another convenient way to deal with this is (and probably more appropriate for the number of points you have) is hexagonal binning:
ggplot(df,aes(x=x,y=y)) + stat_binhex()
And there is also regula...
Vagrant stuck connection timeout retrying
...anage list runningvms
This will result in something like this:
"projects_1234567890" {5cxxxx-cxxx-4xxx-8xxx-5xxxxxxxxxx}
Quite often, the VM is simply waiting for you to select an option in the bootloader. You can send the appropriate keycode (in the case, Enter) to the vm with controlvm:
vbo...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
...esult;
}
}
return nil;
}
SWIFT 3
override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {
if clipsToBounds || isHidden || alpha == 0 {
return nil
}
for subview in subviews.reversed() {
let subPoint = subview.convert(point, from: ...
Mismatch Detected for 'RuntimeLibrary'
...o++ library and the object file for the OP's program, and its value is "MDd_DynamicDebug" for one of them and "MTd_StaticDebug" for the other. This way, the linker that is trying to link two object files together can detect and report a whole new class of errors, given that the linkers that produced...
How to get body of a POST in php?
...dy of a POST or PUT request (or any other HTTP method):
$entityBody = file_get_contents('php://input');
Also, the STDIN constant is an already-open stream to php://input, so you can alternatively do:
$entityBody = stream_get_contents(STDIN);
From the PHP manual entry on I/O streamsdocs:
ph...
Setting default value for TypeScript object passed as argument
...myParamsObject;
//Compiles to:
var firstName = myParamsObject.firstName,
_a = myParamsObject.lastName,
lastName = _a === void 0 ? 'Smith' : _a;
Writing an interface, type or class for the parameter object improves legibility.
type FullName = {
firstName: string;
/** @default 'S...
Automatic vertical scroll bar in WPF TextBlock?
...del : ILogBoxViewModel, INotifyPropertyChanged
{
private readonly ILog _log = LogManager.GetLogger<LogBoxViewModel>();
private bool _attachedPropertyClear;
private string _attachedPropertyAppend;
public void CmdAppend(string toAppend)
{
string toLog = $"{DateTime....
✔ Checkmark selected row in UITableViewCell
...
Update Swift 4
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPat...