大约有 10,000 项符合查询结果（耗时：0.0210秒） [XML]
How to check whether a string is Base64 encoded or not
...
Try like this for PHP5
//where $json is some data that can be base64 encoded
$json=some_data;
//this will check whether data is base64 encoded or not
if (base64_decode($json, true) == true)
{
echo "base64 encoded";
}
e...
Difference between map and collect in Ruby?
...ww.ruby-doc.org/core/classes/Array.html#M000249
ary.collect {|item| block } → new_ary
ary.map {|item| block } → new_ary
ary.collect → an_enumerator
ary.map → an_enumerator
Invokes block once for each element of self.
Creates a new array containing the values returned ...
How do I iterate over an NSArray?
...oding for OS X 10.6 / iOS 4.0 and above, you also have the option of using block-based APIs to enumerate arrays and other collections:
[array enumerateObjectsUsingBlock:^(id object, NSUInteger idx, BOOL *stop) {
// do something with object
}];
You can also use -enumerateObjectsWithOptions:usi...
How to remove globally a package from Composer?
I ran this command to install globally PHPUnit :
2 Answers
2
...
How can I run an external command asynchronously from Python?
...ling of in/out buffers and there are situations where flooding these might block.
– Ali Afshar
Mar 11 '09 at 22:11
Ada...
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...
How to remove the border highlight on an input text element
...xample:
form,
label {
margin: 1em auto;
}
label {
display: block;
}
<form>
<label>Click to see the input below to see the outline</label>
<input type="text" placeholder="placeholder text" />
</form>
The most common "fix" that most recom...
Node.js app can't run on port 80 even though there's no other process blocking the port
I'm running an instance of Debian on Amazon EC2 with Node.js installed. If I run the code below:
9 Answers
...
How do I set a variable to the output of a command in Bash?
... Use: %7s)\n" \
"${filesystem#*/mapper/}" "$mounted" $pct $blocks "$use"
done
} {list}< <(LANG=C df -k)
And of course with inline documents:
while IFS=\; read -u $list -a myvar ;do
echo ${myvar[2]}
done {list}<<"eof"
foo;bar;baz
alice;bob;charlie
$cherry;$straw...
How to create custom easing function with Core Animation?
...on
But I think it can be made a little simpler and more readable by using blocks. So we can define a category on CAKeyframeAnimation that looks something like this:
CAKeyframeAnimation+Parametric.h:
// this should be a function that takes a time value between
// 0.0 and 1.0 (where 0.0 is the be...