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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
$this-&...
How can I know when an EditText loses focus?
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edited Mar 30 '16 at 6:14
Mann
50033 silver badges1313 bronze badges
answered May 16 '12 at 2...
What does -save-dev mean in npm install grunt --save-dev
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edited Apr 5 '19 at 9:35
Rob
1,3131010 silver badges2121 bronze badges
answered Oct 7 '13 at...
How long is the SHA256 hash?
...);
var_dump($hash);
Will give you :
$ php temp.php
string(64) "68e656b251e67e8358bef8483ab0d51c6619f3e7a1a9f0e75838d41ff368f728"
i.e. a string with 64 characters.
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How to say “should_receive” more times in RSpec
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214
This is outdated. Please check Uri's answer below
for 2 times:
Project.should_receive(:find).tw...
Why are C# 3.0 object initializer constructor parentheses optional?
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143
This question was the subject of my blog on September 20th 2010. Josh and Chad's answers ("the...
How do I insert datetime value into a SQLite database?
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154
The format you need is:
'2007-01-01 10:00:00'
i.e. yyyy-MM-dd HH:mm:ss
If possible, howeve...
Iterating over each line of ls -l output
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Set IFS to newline, like this:
IFS='
'
for x in `ls -l $1`; do echo $x; done
Put a sub-shell around it if you don't want to set IFS permanently:
(IFS='
'
for x in `ls -l $1`; do echo $x; done)
Or use while | read instead:
ls -l $1 | while read x; do echo $x; done
One more ...
Can I add comments to a pip requirements file?
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211
Sure, you can, just use #
pip docs:
A line that begins with # is treated as a comment and ...
.NET List Concat vs AddRange
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122
They have totally different semantics.
AddRange modifies the list by adding the other items t...