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What is PostgreSQL explain telling me exactly?
...higher than the startup cost, reflecting the fact that once the entire dataset has been sorted, the sorted data can be emitted very quickly.
Notice that the startup time of the LIMIT 23283.24 is exactly equal to the startup time of the sort. This is not because LIMIT itself has a high startup time....
What is scaffolding? Is it a term for a particular platform?
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Scaffolding generally refers to a quickly set up skeleton for an app. It's not rails-only since other platforms have it as well. It's also not generally meant to be a "final" system; merely the first, smallest way to do it.
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How to use http.client in Node.js if there is basic authorization
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You have to set the Authorization field in the header.
It contains the authentication type Basic in this case and the username:password combination which gets encoded in Base64:
var username = 'Test';
var password = '123';
var auth = '...
How to make all Objects in AWS S3 bucket public by default?
I am using a PHP library to upload a file to my bucket. I have set the ACL to public-read-write and it works fine but the file is still private.
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Could not establish trust relationship for SSL/TLS secure channel — SOAP
...oad balancer messing things up?
does the new server machine have the clock set correctly (i.e. so that the UTC time is correct [ignore local time, it is largely irrelevent]) - this certainly matters for WCF, so may impact regular SOAP?
is there a certificate trust chain issue? if you browse from the...
XML Validation with XSD in Visual Studio IDE
...ke this in your Properties window of the XML document:
In the XML schema set editor (opens when you click on the (...) ellipsis in the "Schemas" textbox in your Properties window) you need to make sure you have your schema present. Also, make sure the Use column for that schema is enabled - if not...
How can I reset a react component including all transitively reachable state?
...lly have react components that are conceptually stateful which I want to reset. The ideal behavior would be equivalent to removing the old component and readding a new, pristine component.
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ViewDidAppear is not called when opening app from background
... and when I open that View Controller from another ViewController I have set viewDidAppear to set value 20 on label. It works fine but when I close my app and than again I open my app but the value doesn't change because viewDidLoad , viewDidAppear and viewWillAppear nothing get called. H...
How to pass argument to Makefile from command line?
...dependency of the target specified on the command line, because $@ will be set to the dependency's name, not the original argument called on the command line. Instead, I assign MAKECMDGOALS to a shell array and then remove the first element: @ args=($(MAKECMDGOALS)); args=("$${args[@]:1}")
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Why use pip over easy_install? [closed]
... that included easy_install is no longer maintained. Its improvements over setuptools got merged back into setuptools. Trying to install distribute will just install setuptools instead.
easy_install itself is only quasi-maintained.
All of the cases where pip used to be inferior to easy_install—ins...