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Should I store entire objects, or pointers to objects in containers?
...cality, storing pointers into vector can be efficient if used along with a custom allocator for the pointees. The custom allocator has to take care of the cache locality, for example using placement new (see en.wikipedia.org/wiki/Placement_syntax#Custom_allocators).
– amit
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What is the purpose of the “role” attribute in HTML?
...(2020): As at least one commenter pointed out, this is now very useful for custom elements, and some spec work is underway to define the default accessibility role of a web component. Even if/once that API is standardized, there may be need to override the default role of a component.
Note/Reply
You...
Pick any kind of file via an Intent in Android
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Samsung file explorer needs not only custom action (com.sec.android.app.myfiles.PICK_DATA),
but also category part (Intent.CATEGORY_DEFAULT) and mime-type should be passed as extra.
Intent intent = new Intent("com.sec.android.app.myfiles.PICK_DATA");
intent.put...
Easy way to prevent Heroku idling?
...sing the 'free' tier of the service should not be powering a production or customer facing application. While the above solutions work against the Dyno idling, think thoroughly about what you're doing.
If nothing else, use a cron job to ping your site, and disable the check for known low-use perio...
Deep cloning objects
...example illustrates the problem. Suppose you have a Dictionary<string, Customer>. Should the cloned Dictionary have the same Customer objects as the original, or copies of those Customer objects? There are reasonable use cases for either one. But ICloneable doesn't make clear which one you...
What was the strangest coding standard rule that you were forced to follow? [closed]
...e names must be singular. My instinct is to name a table that holds, say, customers, "Customers", not "Customer". Sounds minor, till you realize all the trouble you would save if only you could name your table "Transactions" instead of "[Transaction]".
– Atario
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MVC 5 Seed Users and Roles
... me it was because my password was not succeeding its validation.
I had a custom passwordvalidator, which was not being called when seeding the database, so the validation rules i was used to (minlength 4 instead of default 6) did not apply. Make sure your password (and all other fields for that ma...
Take a full page screenshot with Firefox on the command-line
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I ended up coding a custom solution (Firefox extension) that does this. I think by the time I developed it, the commandline mentioned in enreas wasn't there.
The Firefox extension is CmdShots. It's a good option if you need finer degree of cont...
How to use git merge --squash?
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Merge newFeature branch into master with a custom commit:
git merge --squash newFeature && git commit -m 'Your custom commit message';
If instead, you do
git merge --squash newFeature && git commit
you will get a commit message that will include a...
Android - Spacing between CheckBox and text
... Unfortunately, you can't use this solution in getView() of custom Adapter (if you recycle your views), since padding will increase endlessly. To fix this problem I had to use something like this: boolean isHackNeeded = Build.VERSION.SDK_INT < 17; float scale = context.getResources...