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How to pick an image from gallery (SD Card) for my app?
... @WilliamKinaan ACTIVITY_SELECT_IMAGE is any int value that you specify in order to identify which result your expecting to receive. It is then sent back in onActivityResult(int requestCode, int resultCode, Intent data) as the 'requestCode'.
– Fydo
May 28 '13 a...
When should you not use virtual destructors?
...number of some object, it would be worth avoiding all virtual functions in order to save the additional 32 bits per object.
In all other cases, you will save yourself debug misery to make the dtor virtual.
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What database does Google use?
...Web page" or "delete cells that are older than a specific date/time."
In order to manage the huge tables, Bigtable splits tables at row boundaries and saves them as tablets. A tablet is around 200 MB, and each machine saves about 100 tablets. This setup allows tablets from a single table to be spr...
relative path in require_once doesn't work
...ml folder name, but it works):
require_once $_SERVER["DOCUMENT_ROOT"] . '/orders.simplystyles.com/script/pdocrud.php';
Solution 2. (undesired comment above about DIR only working since php 5.3, but it works):
require_once __DIR__. '/../script/pdocrud.php';
Solution 3. (I can't see any downside...
Configuring Git over SSH to login once
...log in. Once you log in, the idea is to run ssh-add once and only once, in order to give the agent your passphrase, to decode your key. The agent then just sits in memory with your key unlocked and loaded, ready to use every time you ssh somewhere.
All ssh-family commands1 will then consult the ag...
Heavy usage of Python at Google [closed]
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Should I instantiate instance variables on declaration or in the constructor?
...r the class. The initialization code is inserted into a constructor in the order it appears in the source code, which means that a field initializer can use the initial values of fields declared before it.
Additionally, you might want to lazily initialize your field. In cases when initializing a f...
How to read the value of a private field from a different class in Java?
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In order to access private fields, you need to get them from the class's declared fields and then make them accessible:
Field f = obj.getClass().getDeclaredField("stuffIWant"); //NoSuchFieldException
f.setAccessible(true);
Hash...
Copying files from Docker container to host
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In order to copy a file from a container to the host, you can use the command
docker cp <containerId>:/file/path/within/container /host/path/target
Here's an example:
$ sudo docker cp goofy_roentgen:/out_read.jpg .
H...
How do you force Visual Studio to regenerate the .designer files for aspx/ascx files?
...).
The solution is surprisingly simple, but it's slightly cumbersome. In order to trigger the code generator, change something that would require the designer.aspx.cs to be generated. Changing content that doesn't affect code, such as a CSS style or adding text, won't trigger the code generator. Y...