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Should I instantiate instance variables on declaration or in the constructor?
... handling with the first variant.
There is additionally the initialization block, which is as well put in the constructor(s) by the compiler:
{
a = new A();
}
Check Sun's explanation and advice
From this tutorial:
Field declarations, however, are not part of any method, so they cannot ...
How to remove globally a package from Composer?
I ran this command to install globally PHPUnit :
2 Answers
2
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Ternary operator is twice as slow as an if-else block?
...sed to be faster than, or at least the same as, its equivalent if - else block.
10 Answers
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How do I get a substring of a string in Python?
...
Substr() normally (i.e. PHP and Perl) works this way:
s = Substr(s, beginning, LENGTH)
So the parameters are beginning and LENGTH.
But Python's behaviour is different; it expects beginning and one after END (!). This is difficult to spot by beg...
jQuery & CSS - Remove/Add display:none
...
and to show the div:
$('.news').show();
or
$('.news').css('display','block');
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Is it possible to “await yield return DoSomethingAsync()”
Are regular iterator blocks (i.e. "yield return") incompatible with "async" and "await"?
9 Answers
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CSS - Expand float child DIV height to parent's height
...mpatible (pretty much every browser ever), quite flexible.
display: inline-block; width:50% with a negative margin hack: quite simple, but column-bottom borders are a little tricky.
1. display:flex
This is really simple, and it's easy to adapt to more complex or more detailed layouts - but flexbo...
How do I center an SVG in a div?
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SVG is inline by default. Add display: block to it and then margin: auto will work as expected.
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jQuery: How can i create a simple overlay?
...nce reasons you might wanna have the DIV hidden and setting the display to block and none as you need it or not.
Hope it helps!
Edit: As @Vitaly so well put it, be sure to check your DocType. Read more on the comments on his findings..
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Swift: Testing optionals for nil
...wift as I am and are wondering: You still have to unwrap xyz inside the if block. It's safe though, even if you force unwrap
– Omar
Jun 10 '19 at 1:05
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