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foldl versus foldr behavior with infinite lists
...r folding a list of n values [x1, x2, x3, x4 ... xn ] with some function f and seed z.
foldl is:
Left associative: f ( ... (f (f (f (f z x1) x2) x3) x4) ...) xn
Tail recursive: It iterates through the list, producing the value afterwards
Lazy: Nothing is evaluated until the result is needed
Backw...
Can Java 8 code be compiled to run on Java 7 JVM?
... code requires you to target a 1.8 VM. I just tried the new Java 8 release and tried compiling with -target 1.7 -source 1.8, and the compiler refuses:
$ javac Test -source 1.8 -target 1.7
javac: source release 1.8 requires target release 1.8
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Create a hexadecimal colour based on a string with JavaScript
...a function that will accept any old string (will usually be a single word) and from that somehow generate a hexadecimal value between #000000 and #FFFFFF , so I can use it as a colour for a HTML element.
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Design for Facebook authentication in an iOS app that also accesses a secured web service
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I just dealt with this myself, and here's the part that bit me:
In your step 5... It's possible for a user to register for an account with you entirely separate from their Facebook ID, right? Then some other time they log in with Facebook.... And you just...
How does TransactionScope roll back transactions?
...gration test where I will be inserting a number of objects into a database and then checking to make sure whether my method retrieves those objects.
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What's the difference between JPA and Spring Data JPA?
I am a bit confused about the difference between Spring Data-JPA and JPA. I know about JPA that it is a specification for persisting the Java Objects to a relational database using popular ORM technology.
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Are there other whitespace codes like   for half-spaces, em-spaces, en-spaces etc useful in HTML
...than one space in the font, except for nbsp, where it renders as one space and imposes the non-breaking character. A real shame. There are cases where only a character will do, for instance when padding is being controled or passed to something else with constructs like before:
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Excluding files/directories from Gulp task
I have a gulp rjs task that concatenates and uglifies all my custom .JS files (any non vendor libraries).
2 Answers
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Restart/undo conflict resolution in a single file
...This restores the unresolved state, including all information about parent and merge base, which allows restarting the resolution.
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git stash apply version
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(note that in some shells you need to quote "stash@{0}", like zsh, fish and powershell).
Since version 2.11, it's pretty easy, you can use the N stack number instead of using stash@{n}. So now instead of using:
git stash apply "stash@{n}"
You can type:
git stash apply n
To get list of stas...