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What do you call the -> operator in Ruby?
...lent to the following one.
succ = lambda { |x| x + 1 }
succ.call(2)
Informally, I have heard it being called stabby lambda or stabby literal.
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Reading ePub format
...g to develop an iPhone application to read ePub files. Is there any framework available to develop this? I have no idea about how to read this file format. I tried to parse a sample file with .epub extension using NSXML Parser, but that fails.
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Why is enum class preferred over plain enum?
...nums
Here are a couple of examples on how to declare them:
enum class Color { red, green, blue }; // enum class
enum Animal { dog, cat, bird, human }; // plain enum
What is the difference between the two?
enum classes - enumerator names are local to the enum and their values do not implicitly ...
How do I squash two non-consecutive commits?
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You can run git rebase --interactive and reorder D before B and squash D into A.
Git will open an editor, and you see a file like this, ex: git rebase --interactive HEAD~4
pick aaaaaaa Commit A
pick bbbbbbb Commit B
pick ccccccc Commit C
pick ddddddd Commit D
# Reb...
How do I get out of a screen without typing 'exit'?
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Ctrl-a d or Ctrl-a Ctrl-d. See the screen manual # Detach.
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Using node.js as a simple web server
... to it but as a regular HTML page (i.e., same experience as when you read normal web pages).
32 Answers
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How to set child process' environment variable in Makefile
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Make variables are not exported into the environment of processes make invokes... by default. However you can use make's export to force them to do so. Change:
test: NODE_ENV = test
to this:
test: export NODE_ENV = test
(assuming you have a su...
Where to place $PATH variable assertions in zsh?
...y comment attached to the answer kev gave, I said:
This seems to be incorrect - /etc/profile isn't listed in any zsh documentation I can find.
This turns out to be partially incorrect: /etc/profile may be sourced by zsh. However, this only occurs if zsh is "invoked as sh or ksh"; in these comp...
how to rotate a bitmap 90 degrees
...rix.postRotate(90);
Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmapOrg, width, height, true);
Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap, 0, 0, scaledBitmap.getWidth(), scaledBitmap.getHeight(), matrix, true);
Then you can use the rotated image to set in your imageview throug...
How to delete SQLite database from Android programmatically
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Make sure you close all Database connections before deleting. Else you'll have to restart the application.
– Jay Soyer
Aug 2 '13 at 15:58
add a com...