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Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
... framework, you'll have a lot of code to trawl through to find it, I'm afraid. The simplest instrument is to selectively place calls to memory_get_usage and narrow it down to where the code leaks. You can also use xdebug to create a trace of the code. Run the code with execution traces and show_mem_...
Create empty queryset by default in django form fields
...ike so: edit_form.fields["asset"].queryset = Asset.objects.filter(location_id=location_id)
– radtek
May 13 '14 at 16:49
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Multiline strings in JSON
... control characters. As an additional example to make it more clear, consider that "\\" is an escape sequence for backslash, as opposed to a literal backslash. The JSON grammar explicitly excludes control characters (cf. the "char" definition), and instead provides for their representation via es...
Maximum Year in Expiry Date of Credit Card
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There is no official guideline as the credit card issuers can choose each when the cards they issue will expire. In fact they have been issuing cards for longer and longer periods of time. If you're trying to determine how far out into the future y...
How do I programmatically click a link with javascript?
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document.getElementById('yourLinkID').click();
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Find the PID of a process that uses a port on Windows
...e:
Proto Local Address Foreign Address State PID
TCP 0.0.0.0:37 0.0.0.0:0 LISTENING 1111
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When to use Vanilla JavaScript vs. jQuery?
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this.id (as you know)
this.value (on most input types. only issues I know are IE when a <select> doesn't have value properties set on its <option> elements, or radio inputs in Safari.)
this.className to get or set an e...
JavaScript: Create and save file [duplicate]
...all browsers, but it has to work in Chrome. I want to do this all client-side.
13 Answers
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How to resolve the C:\fakepath?
...to know your local machine's filesystem. It would be nice if all browsers did this.
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Group by in LINQ
...ant:
var results = from p in persons
group p.car by p.PersonId into g
select new { PersonId = g.Key, Cars = g.ToList() };
Or as a non-query expression:
var results = persons.GroupBy(
p => p.PersonId,
p => p.car,
(key, g) => new { PersonId = key, ...