大约有 16,000 项符合查询结果（耗时：0.0409秒） [XML]
Recreating a Dictionary from an IEnumerable
...the callers require the result of the method to be a dictionary. How can I convert the IEnumerable<KeyValuePair<string, ArrayList>> into a Dictionary<string, ArrayList> so that I can use TryGetValue ?
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How to create index on JSON field in Postgres?
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Found:
CREATE TABLE publishers(id INT, info JSON);
CREATE INDEX ON publishers((info->>'name'));
As stated in the comments, the subtle difference here is ->> instead of ->. The former one returns the value as text, the latter as a JSON object...
Why implement interface explicitly?
So, what exactly is a good use case for implementing an interface explicitly?
11 Answers
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AngularJS : Difference between the $observe and $watch methods
...at post. scope.$eval(item) is really helpful. If item is a json string, it convert to an json object.
– bnguyen82
Aug 16 '13 at 9:16
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Best XML Parser for PHP [duplicate]
... and easy xml parsing when an extension is not available:
<?php
/**
* Convert XML to an Array
*
* @param string $XML
* @return array
*/
function XMLtoArray($XML)
{
$xml_parser = xml_parser_create();
xml_parse_into_struct($xml_parser, $XML, $vals);
xml_parser_free($xml_parser);
...
Get list of all routes defined in the Flask app
... need to combine it with other answers above.
Rule's repr() takes care of converting the required arguments in the route.
def list_routes():
routes = []
for rule in app.url_map.iter_rules():
routes.append('%s' % rule)
return routes
The same thing using a list comprehension:...
Good Hash Function for Strings
...it more likely to generate unique hashes) So you could do something like:
int hash = 7;
for (int i = 0; i < strlen; i++) {
hash = hash*31 + charAt(i);
}
share
|
improve this answer
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C# List to string with delimiter
Is there a function in C# to quickly convert some collection to string and separate values with delimiter?
2 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
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It's a lower-level solution. It's not always easy to convert regexps this way. On the other hand, this solution doesn't depend on top-level programming language ;)
– Konstantin
Mar 21 '18 at 12:43
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Java: Static vs inner class [duplicate]
...stance.
See this example
class A
{
class B
{
// static int x; not allowed here
}
static class C
{
static int x; // allowed here
}
}
class Test
{
public static void main(String… str)
{
A a = new A();
// Non-Static Inner Class
...