大约有 40,000 项符合查询结果（耗时：0.0583秒） [XML]
Base64 length calculation?
...luding the null terminator is silly, especially since we're talking about .net here.
– CodesInChaos
Mar 23 '14 at 16:18
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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
...one heap object. Compilers which duck-type enumerators (as both C# and vb.net do) can take advantage of this when generating foreach code. If the List<T> is cast to IEnumrable<T> before the foreach, the IEnumerable<T>.GetEnumerator() method will return a heap-allocated object, re...
json_encode() escaping forward slashes
...* @link http://stackoverflow.com/a/10210433/367456
*/
$url = 'http://www.example.com/';
echo json_encode($url), "\n";
echo json_encode($url, JSON_UNESCAPED_SLASHES), "\n";
Example Output:
"http:\/\/www.example.com\/"
"http://www.example.com/"
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How to convert PascalCase to pascal_case?
...gt; lib_c
You can test this function here: http://syframework.alwaysdata.net/decamelize
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Why does InetAddress.isReachable return false, when I can ping the IP address?
... case, it fails.
//also, this fails for an invalid address, like "www.sjdosgoogle.com1234sd"
InetAddress[] addresses = InetAddress.getAllByName("www.google.com");
for (InetAddress address : addresses) {
if (address.isReachable(10000))
{
System.out...
Right HTTP status code to wrong input
... correct), but semantically erroneous, XML instructions.
source: https://www.bennadel.com/blog/2434-http-status-codes-for-invalid-data-400-vs-422.htm
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Are nested span tags OK in XHTML?
...lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<title>Title</title>
</head>
&l...
Installing older version of R package
...e on Windows, an equivalent using PowerShell would be:
(new-object System.Net.WebClient).DownloadFile("http://cran.r-project.org/src/contrib/Archive/ggplot2/ggplot2_0.9.1.tar.gz", "./ggplot2_0.9.1.tar.gz")
or you can just download the source from the CRAN archive via your web browser.
To instal...
Direct casting vs 'as' operator?
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The as keyword is good in asp.net when you use the FindControl method.
Hyperlink link = this.FindControl("linkid") as Hyperlink;
if (link != null)
{
...
}
This means you can operate on the typed variable rather then having to then cast it from obj...
Normalize data in pandas
...frame has strings in some columns, see this answer
– netskink
Jul 22 '18 at 0:21
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