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Access object child properties using a dot notation string [duplicate]
... scenario that you could put the entire array variable you're after into a string you could use the eval() function.
var r = { a:1, b: {b1:11, b2: 99}};
var s = "r.b.b2";
alert(eval(s)); // 99
I can feel people reeling in horror
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insert multiple rows via a php array into mysql
...time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its functions are also available to me.
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vs in Generics
...ut T> is covariant, you're allowed to do the following:
IEnumerable<string> strings = new List<string>();
IEnumerable<object> objects = strings;
The second line above would fail if this wasn't covariant, even though logically it should work, since string derives from object. ...
Pretty-Printing JSON with PHP
...ll.
http://php.net/manual/en/function.json-encode.php
<?php
...
$json_string = json_encode($data, JSON_PRETTY_PRINT);
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filter items in a python dictionary where keys contain a specific string
...ct comprehension:
filtered_dict = {k:v for k,v in d.iteritems() if filter_string in k}
One you see it, it should be self-explanatory, as it reads like English pretty well.
This syntax requires Python 2.7 or greater.
In Python 3, there is only dict.items(), not iteritems() so you would use:
fil...
Unmangling the result of std::type_info::name
...ures.
In file type.hpp
#ifndef TYPE_HPP
#define TYPE_HPP
#include <string>
#include <typeinfo>
std::string demangle(const char* name);
template <class T>
std::string type(const T& t) {
return demangle(typeid(t).name());
}
#endif
In file type.cpp (requires C++11)
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Best practice to return errors in ASP.NET Web API
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public class NotFoundWithMessageResult : IHttpActionResult
{
private string message;
public NotFoundWithMessageResult(string message)
{
this.message = message;
}
public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
{
var...
Send POST request using NSURLSession
...configuration delegate:self delegateQueue:nil];
NSURL *url = [NSURL URLWithString:@"[JSON SERVER"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url
cachePolicy:NSURLRequestUseProtocolCachePolicy
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How do I perform a Perl substitution on a string while keeping the original?
In Perl, what is a good way to perform a replacement on a string using a regular expression and store the value in a different variable, without changing the original?
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Efficient way to remove keys with empty strings from a dict
...dict and would like to remove all the keys for which there are empty value strings.
17 Answers
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