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When do you use map vs flatMap in RxJava?
...another.
flatMap transform one event to zero or more event. (this is taken from IntroToRx)
As you want to transform your json to an object, using map should be enough.
Dealing with the FileNotFoundException is another problem (using map or flatmap wouldn't solve this issue).
To solve your Excepti...
SPA best practices for authentication and session management
...ent form, at length, here:
RESTful Authentication
But this addresses it from the server-side. Let's look at this from the client-side. Before we do that, though, there's an important prelude:
Javascript Crypto is Hopeless
Matasano's article on this is famous, but the lessons contained therein a...
Removing the remembered login and password list in SQL Server Management Studio
... you can remove Remove cached login via How to remove cached server names from the Connect to Server dialog?. Just confirmed this delete in MRU list works fine in 2016 and 2017.
SQL Server Management Studio 2017 delete the file
C:\Users\%username%\AppData\Roaming\Microsoft\SQL Server Management St...
Why don't they teach these things in school? [closed]
...e very expensive. We'd need to run a complete, realistic software project from beginning to end, numerous times, with groups of programmers that have equivalent expertise, using different techniques. At the very least we'd need lots of data about existing projects which those projects would be unw...
How do I delete a Git branch locally and remotely?
...to use the easier or harder syntax.
Delete Remote Branch [Original Answer from 5-Jan-2010]
From Chapter 3 of Pro Git by Scott Chacon:
Deleting Remote Branches
Suppose you’re done with a remote branch — say, you and your collaborators are finished with a feature and have merged it into...
setImmediate vs. nextTick
...usly. Left unchecked, this would starve the event loop, preventing any I/O from occurring. setImmediates are queued in the order created, and are popped off the queue once per loop iteration. This is different from process.nextTick which will execute process.maxTickDepth queued callbacks per iterati...
CORS - What is the motivation behind introducing preflight requests?
...echanism that allows a web page to make XMLHttpRequests to another domain (from wikipedia ).
10 Answers
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How to convert a std::string to const char* or char*?
... you could, but strdup is not a c or c++ standard function, it's from posix :)
– Johannes Schaub - litb
Dec 7 '08 at 20:39
14
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iterating over and removing from a map [duplicate]
...of iterating over the entry set. Its not very obvious though that removing from the key set removes things from the map (i.e. the key set can be a copy)
– Gennadiy
Dec 10 '09 at 23:43
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How to append one file to another in Linux from the shell?
...d just within a few seconds, 50 million lines have been put in to the file from just previously a few dozen lines.
– Hendra Uzia
Mar 20 '17 at 6:56
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