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Illegal string offset Warning PHP

... What about explaining why this works and why the OP's code doesn't? Answers like these are the main reason why people are sceptical of Stack Overflow, even though there are lots of people who are willing to explain every detail in their answers and actually crea...
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Is it better to use Enumerable.Empty() as opposed to new List() to initialize an IEnumerable

...e main point. Even if you use empty array or empty list, those are objects and they are stored in memory. Than Garbage Collector has to take care of them. If you are dealing with high throughput application, it could be noticeable impact. Enumerable.Empty does not create an object per call thus put...
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Merging two arrays in .NET

Is there a built in function in .NET 2.0 that will take two arrays and merge them into one array? 21 Answers ...
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how to unit test file upload in django

...ase. To POST a file, you need only provide the file field name as a key, and a file handle to the file you wish to upload as a value. For example: c = Client() with open('wishlist.doc') as fp: c.post('/customers/wishes/', {'name': 'fred', 'attachment': fp}) ...
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Are fluid websites worth making anymore? [closed]

I'm making a website now and I am trying to decide if I should make it fluid or not. Fixed width websites are much easier to make and also much easier to make them appear consistent. ...
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Android: Temporarily disable orientation changes in an Activity

... should not be interrupted. I'm doing the heavy lifting in another thread, and using a progress dialog which I set as non-cancellable. However, I noticed that if I rotate my phone it restarts the activity which is REALLY bad for the process that was running, and I get a Force Close. ...
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How to empty a list?

...ote that doing lst = [] does not empty the list, just creates a new object and binds it to the variable lst, but the old list will still have the same elements, and effect will be apparent if it had other variable bindings. ...
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How can I check if a command exists in a shell script? [duplicate]

...my first shell script. In my script I would like to check if a certain command exists, and if not, install the executable. How would I check if this command exists? ...
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How to use clock() in C++

... @Th.Thielemann both clock() and clock_t are from the C Standard Library's header of time.h, and therefore do not need the use of std namespace prefixes after the inclusion of their libraries. <ctime> wraps that value and function with the std name...
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Targeting position:sticky elements that are currently in a 'stuck' state

...than sticky/fixed */ } :not(:stuck) { position: sticky; /* Or fixed */ } And there could be many more edge cases that would be difficult to address. While it's generally agreed upon that having selectors that match based on certain layout states would be nice, unfortunately major limitations exis...