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PHP Foreach Pass by Reference: Last Element Duplicating? (Bug?)
...echo $item;
Gives the output...
one
two
three
three
As other people already said, you're overwriting the referenced variable in $arr[2] with your second loop, but it's only happening because $item never went out of scope. What do you guys think... bug?
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How to use single storyboard uiviewcontroller for multiple subclass
...that the pointer to self doesn't change. So inspection of the object (e.g. reading _ivar / property values) after object_setClass can cause crashes.
– Patrik
Aug 7 '17 at 9:06
...
What are the differences between Rust's `String` and `str`?
... use String if you need owned string data (like passing strings to other threads, or building them at runtime), and use &str if you only need a view of a string.
This is identical to the relationship between a vector Vec<T> and a slice &[T], and is similar to the relationship between b...
How to sort a dataframe by multiple column(s)
... use the arrange() function from plyr as Hadley pointed out in the above thread:
library(plyr)
arrange(dd,desc(z),b)
Benchmarks: Note that I loaded each package in a new R session since there were a lot of conflicts. In particular loading the doBy package causes sort to return "The following o...
Using an ORM or plain SQL? [closed]
...
I say plain SQL for Reads, ORM for CUD.
Performance is something I'm always concerned about, specially in web applications, but also code maintainability and readability. To address these issues I wrote SqlBuilder.
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AngularJS - Access to child scope
...r solutions:
Define properties in parents and access them from children (read the link above)
Use a service to share state
Pass data through events. $emit sends events upwards to parents until the root scope and $broadcast dispatches events downwards. This might help you to keep things semanticall...
py2exe - generate single executable file
... excludes=['_ssl', # Exclude _ssl
'pyreadline', 'difflib', 'doctest', 'locale',
'optparse', 'pickle', 'calendar', 'pbd', 'unittest', 'inspect'], # Exclude standard library
dll_excludes=['msvcr71.dll', 'w9x...
Ruby: kind_of? vs. instance_of? vs. is_a?
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It just reads better sometimes. Think @honda.kind_of? Car and @person.is_a? Administrator, Ruby's all about the aesthetics. In fact, notice the grammatical error... with active support you can write @person.is_an? Administrator :)......
jQuery Ajax POST example with PHP
....always().
Note: Remember that the above snippet has to be done after DOM ready, so you should put it inside a $(document).ready() handler (or use the $() shorthand).
Tip: You can chain the callback handlers like this: $.ajax().done().fail().always();
PHP (that is, form.php):
// You can access t...
How can I convert this foreach code to Parallel.ForEach?
...
string[] lines = File.ReadAllLines(txtProxyListPath.Text);
List<string> list_lines = new List<string>(lines);
Parallel.ForEach(list_lines, line =>
{
//Your stuff
});
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