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What is the difference between a.getClass() and A.class in Java?

...e typically emits the following instructions for Integer.getClass(): aload_1 invokevirtual #3; //Method java/lang/Object.getClass:()Ljava/lang/Class; and the following for Integer.class: //const #3 = class #16; // java/lang/Integer ldc_w #3; //class java/lang/Integer The former would...
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What does this symbol mean in JavaScript?

...ncatenation, and subtraction operators; unary sign operators What does = +_ mean in JavaScript, Single plus operator in javascript What's the significant use of unary plus and minus operators? Why is [1,2] + [3,4] = "1,23,4" in JavaScript? Why does JavaScript handle the plus and minus operators bet...
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Android, canvas: How do I clear (delete contents of) a canvas (= bitmaps), living in a surfaceView?

...NSPARENT is unnecessary. PorterDuff.Mode.CLEAR is totally enough for a ARGB_8888 bitmap which means setting the alpha and color to [0, 0]. Another way is to use Color.TRANSPARENT with PorterDuff.Mode.SRC. – jiasli May 30 '14 at 12:02 ...
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What is the difference between UTF-8 and ISO-8859-1?

... Unicode is actually 17 planes of 2^16 code points. 0x00_0000 to 0x1F_FFFF. The 17 planes can accommodate 1,114,112 code points. Of these, 2,048 are surrogates, 66 are non-characters, and 137,468 are reserved for private use, leaving 974,530 for public assignment.about 1 million. ...
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Haskell: Converting Int to String

...swered Oct 25 '17 at 5:15 prasad_prasad_ 7,06411 gold badge1212 silver badges2121 bronze badges ...
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How do I decode a base64 encoded string?

...ring(Convert.FromBase64String("OBFZDT...")); string result = m000493(p0, "_p0lizei."); // result == "gaia^unplugged^Ta..." with return m0001cd(builder3.ToString()); changed to return builder3.ToString();. share ...
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How to copy a collection from one database to another in MongoDB

...h related feature request. You could do something like: db.<collection_name>.find().forEach(function(d){ db.getSiblingDB('<new_database>')['<collection_name>'].insert(d); }); Please note that with this, the two databases would need to share the same mongod for this to work. B...
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What are some methods to debug Javascript inside of a UIWebView?

...use it like this: [NSClassFromString(@"WebView") performSelector:@selector(_enableRemoteInspector)]; Remember to remove the call when you build for release! – rpitting Apr 3 '12 at 13:58 ...
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How to set size for local image using knitr for markdown?

...tion: Resizing local images As of knitr 1.12, there is the function include_graphics. From ?include_graphics (emphasis mine): The major advantage of using this function is that it is portable in the sense that it works for all document formats that knitr supports, so you do not need to think if you...
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Can I install Python 3.x and 2.x on the same Windows computer?

... quick search on Google, here is the Windows solution: #!c:/Python/python3_6.exe -u Same thing: in front of your script. share | improve this answer | follow ...