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Fastest way to get the first object from a queryset in django?
... will make the results deterministic but will most probably slow the query down.
– Phil Krylov
Jun 27 '17 at 19:24
@ja...
How to enable file sharing for my app?
...in the info plist of your app. Here's a link for the documentation. Scroll down to the file sharing support part.
In the past, it was also necessary to define CFBundleDisplayName (Bundle Display Name), if it wasn't already there. More details here.
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C# generic type constraint for everything nullable
...re you do the check in the static constructor, otherwise you'll be slowing down the construction of every instance of your generic class (unnecessarily)
– Eamon Nerbonne
Apr 5 '14 at 9:24
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Is it possible to specify a different ssh port when using rsync?
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Indeed, although to be fair, the downside is it becomes invisible, ie, after a while one might forget it's in the ssh config file and not understand how it works, or one of your colleagues might copy/paste the command and not understand why it doesn't work i...
How to set TextView textStyle such as bold, italic
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The spannable and fromHTML options may slow down typing / setText if the text is big due to layout recalculations. Avoid it if you have other methods available.
– Eugene Kartoyev
Oct 29 '18 at 6:21
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When should the volatile keyword be used in C#?
... volatile field. Volatile
fields are a sign that you are doing something downright crazy: you're
attempting to read and write the same value on two different threads
without putting a lock in place. Locks guarantee that memory read or
modified inside the lock is observed to be consistent, lo...
How to convert QString to std::string?
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Why the down votes, folks? It's an overkill in my case, but who knows, it might be useful (to me or someone else).
– augustin
Nov 18 '10 at 12:39
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Public Fields versus Automatic Properties
... properties.
It's nothing to make it an auto-property today, and 3 months down the line realize you want to make it lazy-loaded, and put a null check in the getter. If you had used a field, this is a recompile change at best and impossible at worst, depending on who & what else relies on your a...
What does it mean to “program to an interface”?
...rly heady discussions, so I'd like to take the opportunity to break things down a bit for understanding why an interface is useful.
When I first started getting exposed to interfaces, I too was confused about their relevance. I didn't understand why you needed them. If we're using a language like...
How do you round a float to two decimal places in jruby
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"%.2f" rounds 5 down, instead of up, is there any way to fix that?
– Mirror318
Jun 14 '16 at 23:37
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