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How to update SQLAlchemy row entry?
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They are not. The former sets the attribute to an SQL expression, the latter performs an in-place addition in Python and again introduces the race.
– Ilja Everilä
Sep 28 '18 at 4:28
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Java URL encoding of query string parameters
...ons, if an encoding is not specified, then the default encoding of the platform is used.
See also:
What every web developer must know about URL encoding
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Inconsistent Accessibility: Parameter type is less accessible than method
...bject (a reference to the currently logged on user, basically) between two forms. At the moment, I have something along these lines in the login form:
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Setting focus on an HTML input box on page load
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You could also use:
<body onload="focusOnInput()">
<form name="passwordForm" action="verify.php" method="post">
<input name="passwordInput" type="password" />
</form>
</body>
And then in your JavaScript:
function focusOnInput() {
documen...
What does it mean that Javascript is a prototype based language?
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Prototypal inheritance is a form of object-oriented code reuse. Javascript is one of the only [mainstream] object-oriented languages to use prototypal inheritance. Almost all other object-oriented languages are classical.
In classical inheritance, th...
When to use ' (or quote) in Lisp?
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We'd get (+ 3 2), + is then invoked on 3 and 2 yielding 5. Our original form is now (* 5 3) yielding 15.
Explain quote Already!
Alright. As seen above, all arguments to a function are evaluated, so if you would like to pass the symbol a and not its value, you don't want to evaluate it. Lisp sy...
“The remote certificate is invalid according to the validation procedure.” using Gmail SMTP server
...rrors.None)
return true;
else
{
if (System.Windows.Forms.MessageBox.Show("The server certificate is not valid.\nAccept?", "Certificate Validation", System.Windows.Forms.MessageBoxButtons.YesNo, System.Windows.Forms.MessageBoxIcon.Question) == System.Windows.Forms.DialogResult...
Is it necessary to write HEAD, BODY and HTML tags?
...p is this:
<!DOCTYPE html>
<title>Test case</title>
<form action='#'>
<input name="var1">
</form>
You should (and do in other browsers) get a DOM that looks like this:
HTML
HEAD
TITLE
BODY
FORM action="#"
INPUT name="var1...
Java logical operator short-circuiting
...lse when A is false, no matter what B is. If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone. This is very useful when the right-hand operand depends on the left one being true or false in order ...
Invoke(Delegate)
...swer to this question lies in how C# Controls work
Controls in Windows Forms are bound to a specific thread and are not
thread safe. Therefore, if you are calling a control's method from a
different thread, you must use one of the control's invoke methods to
marshal the call to the proper ...