大约有 10,200 项符合查询结果（耗时：0.0172秒） [XML]
Download a file by jQuery.Ajax
...ToBlob(base64, mimetype, slicesize) {
if (!window.atob || !window.Uint8Array) {
// The current browser doesn't have the atob function. Cannot continue
return null;
}
mimetype = mimetype || '';
slicesize = slicesize || 512;
var bytechars = atob(base64);
var byt...
Seeking clarification on apparent contradictions regarding weakly typed languages
...to the "scalar" type discussed above, Perl also has two structured types: "array" and "hash". Those are very distinct from scalars, to the point where Perl variables have different sigils indicating their type ($ for scalars, @ for arrays, % for hashes)1. There are coercion rules between these typ...
Best way to pretty print a hash
I have a large hash with nested arrays and hashes. I would like to simply print it out so it 'readable' to the user.
12 An...
Variable is accessed within inner class. Needs to be declared final
...
Here's a funny answer.
You can declare a final one-element array and change the elements of the array all you want apparently. I'm sure it breaks the very reason why this compiler rule was implemented in the first place but it's handy when you're in a time-bind as I was today.
I ac...
$(this).serialize() — How to add a value?
...
While matt b's answer will work, you can also use .serializeArray() to get an array from the form data, modify it, and use jQuery.param() to convert it to a url-encoded form. This way, jQuery handles the serialisation of your extra data for you.
var data = $(this).serializeArray(); /...
New line in JavaScript alert box
...ave to transform special characters to their escape sequences
$patterns = array("/\\\\/", '/\n/', '/\r/', '/\t/', '/\v/', '/\f/');
$replacements = array('\\\\\\', '\n', '\r', '\t', '\v', '\f');
$string = preg_replace($patterns, $replacements, $string);
echo "<script>alert(\"$string\")</scr...
Getting the count of unique values in a column in bash
...r each line of the combined input files
* Split the line into the @Fields array
* For every column, increment the result array-of-hashes data structure
In the top-level for loop:
* Loop over the result array
* Print the column number
* Get the values used in that column
* Sort the values by...
Selecting with complex criteria from pandas.DataFrame
...
>>> df.loc[(df["B"] > 50) & (df["C"] == 900), "A"].values
array([5, 8], dtype=int64)
>>> df.loc[(df["B"] > 50) & (df["C"] == 900), "A"] *= 1000
>>> df
A B C
0 9 40 300
1 9 70 700
2 5000 70 900
3 8000 80 900
4 7 50 200
5 ...
How to get whole and decimal part of a number?
...$negative = -1;
$number *= -1;
}
if ($returnUnsigned){
return array(
floor($number),
($number - floor($number))
);
}
return array(
floor($number) * $negative,
($number - floor($number)) * $negative
);
}
The $returnUnsigned stops it from making -1.25 in t...
Test if object implements interface
...omeOtherType) )
{
}
I think this is much neater than looking through the array returned by GetInterfaces and has the advantage of working for classes as well.
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