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PostgreSQL function for last inserted ID
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( tl;dr : goto option 3: INSERT with RETURNING )
Recall that in postgresql there is no "id" concept for tables, just sequences (which are typically but not necessarily used as default values for surrogate primary keys, with the SERIAL pseudo-type).
If you are interested in g...
What is the difference between integration testing and functional testing? [closed]
...your system or the database interacts with your data abstraction layer. Usually this requires an fully installed system, although in its purest forms it does not.
Functional testing is when you test the system against the functional requirements of the product. Product/Project management usually wr...
How to import a .cer certificate into a java keystore?
...the private key. The private key is provided with a .PFX keystore file normally.
If you really authenticate is because you already had imported the private key.
You normally can import .CER certificates without any problems with
keytool -importcert -file certificate.cer -keystore keystore.jks -al...
Setting PATH environment variable in OSX permanently
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This worked in EL Capitan. Close all the terminals and open a new terminal to check echo $PATH.
– Prem Ananth C
Apr 3 '16 at 12:25
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what exactly is device pixel ratio?
...d device to download a very high resolution image, only to downscale it locally. You also don't want high-end devices to upscale low resolution images for a blurry user experience.
If you are stuck with bitmap images, to accommodate for many different device pixel ratios, you should use CSS Media Q...
How to merge the current branch into another branch
... +1 This is creative, and doesn't touch the working tree at all. Just a clarification: the /path/to/your/repository is the path to your working tree, i.e. don't include the .git directory. Also, this should go without saying: the remote will have to be updated if you move the repo.
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Using generic std::function objects with member functions in one class
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A non-static member function must be called with an object. That is, it always implicitly passes "this" pointer as its argument.
Because your std::function signature specifies that your function doesn't take any arguments (<void(void)>), you must bind the ...
Delete a closed pull request from GitHub
I accidentally made a wrong pull request and ended up closing the request myself. It's in a closed state right now but it's accessible via direct URL and showing on my activity bar.
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Visual Studio replace tab with 4 spaces?
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You can edit this behavior in:
Tools->Options->Text Editor->All Languages->Tabs
Change Tab to use "Insert Spaces" instead of "Keep Tabs".
Note you can also specify this per language if you wish to have different behavior in a specific language.
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Swift compiler error: “non-modular header inside framework module”
...n's Bridging Header, which behaves differently. The umbrella header is actually designated for mixed swift, obj-c framework and its purpose is exposing the APIs to the outer world that your framework has in objective-c or c. That means the headers we put there should be in the public scope.
It sho...