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install / uninstall APKs programmatically (PackageManager vs Intents)
...k of what applications it has installed. Of course, this could be achieved by simply keeping a list of installed applications. But this should not be necessary! It should be the responsibility of the PackageManager to maintain the installedBy(a, b) relationship. In fact, according to the API it is:
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Specify pane percentage in tmuxinator project
...it should be made clear in the answer that the same number of panes listed by the list-panes command should be specified under the panes: section. For example, if 6 panes are defined 6 lines should appear under panes:, even if they only contain a - (saying do nothing in this pane). If not the window...
How to create and write to a txt file using VBA
...nnel method? I'd like some reasons to tell my students with info backed up by other experience.
– Rick Henderson
Jun 7 '16 at 16:40
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Rails: where does the infamous “current_user” come from?
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It is defined by several gems, e.g. Devise
You'll need to store the user_id somewhere, usually in the session after logging in. It also assumes your app has and needs users, authentication, etc.
Typically, it's something like:
class App...
What's the best way of structuring data on firebase?
...ize in places where read efficiency is a concern. This is a technique used by all the large scale apps (e.g. Twitter and Facebook) and although it goes against our DRY principles, it's generally a necessary feature of scalable apps.
The gist here is that you want to work hard on writes to make read...
Outputting data from unit test in python
... The docs hint at this but it's worth mentioning explicitly: by default, if msg is used, it will replace the normal error message. To get msg appended to the normal error message, you also need to set TestCase.longMessage to True
– Catalin Iacob
O...
Convert PHP closing tag into comment
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Fix using character classes
To fix line comments, you can break up ?> by putting > inside a character class like so:
$string = preg_replace('#<br\s*/?[>](?:\s*<br\s*/?[>])+#i', '<br />', $string);
^ ^ ^ ^
To fix block comment...
How do I enable MSDTC on SQL Server?
...Do you even need MSDTC? The escalation you're experiencing is often caused by creating multiple connections within a single TransactionScope.
If you do need it then you need to enable it as outlined in the error message. On XP:
Go to Administrative Tools -> Component Services
Expand Component ...
A command-line HTML pretty-printer: Making messy HTML readable [closed]
... Windows, UNIX, and more. It corrects and cleans up HTML and XML documents by fixing markup errors and upgrading legacy code to modern standards.
For your needs, here is the command line to call Tidy:
tidy inputfile.html
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What's the difference between ES6 Map and WeakMap?
...nted in JavaScript with two arrays (one for keys, one for
values) shared by the 4 API methods. Such an implementation would have
two main inconveniences. The first one is an O(n) search (n being the
number of keys in the map). The second one is a memory leak issue.
With manually written maps...