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Android Reading from an Input stream efficiently

....readLine()) != null; ) { total.append(line).append('\n'); } You can now use total without converting it to String, but if you need the result as a String, simply add: String result = total.toString(); I'll try to explain it better... a += b (or a = a + b), where a and b are Strings, copie...
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How to get all subsets of a set? (powerset)

... to for i in range(1, 1 << x). Returning to this years later, I'd now write it like this: def powerset(s): x = len(s) masks = [1 << i for i in range(x)] for i in range(1 << x): yield [ss for mask, ss in zip(masks, s) if i & mask] And then the test code...
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Set Locale programmatically

...his answer, since configuration.locale was deprecated from API 24, you can now use: configuration.setLocale(locale); Take in consideration that the minSkdVersion for this method is API 17. Full example code: @SuppressWarnings("deprecation") private void setLocale(Locale locale){ SharedPrefU...
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What is the difference between a URI, a URL and a URN?

...hat URN to a URL and download the book for you. Do any browsers actually know how to fetch documents by URN? Not that I know of, but modern web browser do implement the data URI scheme. Does the difference between URL and URI have anything to do with whether it is relative or absolute? No. Bot...
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How can I return to a parent activity correctly?

...ng startActivityForResult() and override onActivtyResult() in Activity A. Now in Activity B just call finish() on button Up. So now you directed to Activity A's onActivityResult() without creating of Activity A again.. shar...
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Obfuscated C Code Contest 2006. Please explain sykes2.c

...&8|i/64]/(i&2?1:8)%8; putchar(32 | (b & 1)); } } Now, note that a[b] is the same as b[a], and apply the -~ == 1+ change again: main(int i) { if(i != 448) main(i+1); i--; if(i % 64 == 0) { putchar('\n'); } else { char a = (">'txiZ^...
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Are PDO prepared statements sufficient to prevent SQL injection?

....6 by default: big5, cp932, gb2312, gbk and sjis. We'll select gbk here. Now, it's very important to note the use of SET NAMES here. This sets the character set ON THE SERVER. There is another way of doing it, but we'll get there soon enough. The Payload The payload we're going to use for this in...
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What underlies this JavaScript idiom: var self = this?

...in event handlers (especially in closures). Edit: Note that using self is now discouraged as window.self exists and has the potential to cause errors if you are not careful. What you call the variable doesn't particularly matter. var that = this; is fine, but there's nothing magic about the name....
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How to save picture to iPhone photo library?

... You will now need to add 'Privacy - Photo Library Additions Usage Description' as of iOS 11 to save photos the users album. – horsejockey Nov 1 '17 at 15:26 ...
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How to add local .jar file dependency to build.gradle file?

... @Gubatron it's documented now: gradle.org/docs/current/userguide/… – David Moles Jan 12 '15 at 22:23 7 ...