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Cannot pass null argument when using type hinting
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PHP 7.1 or newer (released 2nd December 2016)
You can explicitly declare a variable to be null with this syntax
function foo(?Type $t) {
}
this will result in
$this->foo(new Type()); // ok
$this->foo(null); // ok
$this->foo(); // error
So, if you want an optio...
In Hibernate Validator 4.1+, what is the difference between @NotNull, @NotEmpty, and @NotBlank?
I can't seem to be able to find a summary that distinguishes the difference between these three annotations.
3 Answers
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Intellij Idea 9/10, what folders to check into (or not check into) source control?
...eans to Intellij 9 Ultimate and need to know what files/folders should typically be excluded from source control as they are not "workstation portable", i.e.: they reference paths that only exist on one user's computer.
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Setting up two different static directories in node.js Express framework
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You can also set the path that static files will be served to the web from by specifying an additional (first) parameter to use() like so:
app.use("/public", express.static(__dirname + "/public"));
app.use("/public2", express.st...
“find: paths must precede expression:” How do I specify a recursive search that also finds files in
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Try putting it in quotes -- you're running into the shell's wildcard expansion, so what you're acually passing to find will look like:
find . -name bobtest.c cattest.c snowtest.c
...causing the syntax error. So try this instead:
find . -name '*test.c'
Note the single quotes around y...
git produces Gtk-WARNING: cannot open display
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and then running git push origin master works the way it should. You can also add the line to your .bashrc file.
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Creating a URL in the controller .NET MVC
... What is best practice to do this? I don't want to construct it myself in case my routes change.
5 Answers
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jQuery .each() index?
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<div class="two">
<ul id="my_list">
<li>canada</li>
<li>america</li>
<li>france</li>
</ul>
</div>
<div class="three">
<p>do</p>
<p>re</p>
<p>me&l...
How do write IF ELSE statement in a MySQL query
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You probably want to use a CASE expression.
They look like this:
SELECT col1, col2, (case when (action = 2 and state = 0)
THEN
1
ELSE
0
END)
as state from tbl1;
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How to produce a range with step n in bash? (generate a sequence of numbers with increments)
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@becko If the step is stored in the variable i, then you can't do for {0..10..${i}} .. it fails.
– Nehal J Wani
May 17 '14 at 8:18
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