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Declaring variables inside loops, good practice or bad practice?
...ble scope is limited to inside the loop, and therefore will issue a proper error message if the variable is by mistake referenced elsewhere.
Last but not least, some dedicated optimization can be performed more efficiently by the compiler (most importantly register allocation), since it knows that t...
Run task only if host does not belong to a group
... +1 and if you don't include the surrounding quote you get the error: This one looks easy to fix. It seems that there is a value started with a quote, and the YAML parser is expecting to see the line ended with the same kind of quote.
– Peter Ajtai
...
Can git operate in “silent mode”?
... The purpose is to remove informational messages, but still display errors. I haven't studied how well-behaved is git concerning what goes to stdout and what goes to stderr, but redirecting both smells like a very bad idea.
– Johan Boulé
Apr 18 '19 at 1...
Traits in PHP – any real world examples/best practices? [closed]
... foo() {}
}
class B extends A
{
use T;
}
The above will result in an error (demo). Likewise, any methods declared in the trait that are also already declared in the using class will not get copied into the class, e.g.
trait T {
public function foo() {
return 1;
}
}
class A {
use ...
is there a post render callback for Angular JS directive?
...multiple directives on the same element will result in a $compile:multidir Error - see: https://docs.angularjs.org/error/$compile/multidir
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What's the strangest corner case you've seen in C# or .NET? [closed]
...es called rounding to nearest, or banker's rounding. It minimizes rounding errors that result from consistently rounding a midpoint value in a single direction.
– ICR
Oct 12 '08 at 12:25
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Django: multiple models in one template using forms [closed]
...his since 'and' short circuits and we want to check to whole page for form errors
if a_valid and b_valid and c_valid:
a = formA.save()
b = formB.save(commit=False)
c = formC.save(commit=False)
b.foreignkeytoA = a
b.save()
c.foreignkeytoB = b
...
How to reset (clear) form through JavaScript?
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I get next error: TypeError: document.getElementById(...).reset is not a function[Learn More]. I use FormValidate plugin for form. its resetForm does not reset form too =( Any suggestions?
– Eugen Konkov
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UPDATE multiple tables in MySQL using LEFT JOIN
...just update 10000 rows at a time. If I just add LIMIT 10000 it gives me an error saying 'Incorrect usage of UPDATE and LIMIT'
– Haril Satra
Feb 19 '19 at 21:46
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Why em instead of px?
I heard you should define sizes and distances in your stylesheet with em instead of in pixels. So the question is why should I use em instead of px when defining styles in css? Is there a good example that illustrates this?
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