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Understanding the difference between Object.create() and new SomeFunction()
...e have two objects a and b.
var a = new Object();
var b = new Object();
Now, suppose a has some methods which b also wants to access. For that, we require object inheritance (a should be the prototype of b only if we want access to those methods). If we check the prototypes of a and b then we wil...
How can I save a screenshot directly to a file in Windows? [closed]
...
Little known fact: in most standard Windows (XP) dialogs, you can hit Ctrl+C to have a textual copy of the content of the dialog.
Example: open a file in Notepad, hit space, close the window, hit Ctrl+C on the Confirm Exit dialog, ca...
Are global variables bad? [closed]
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Few (perhaps silly) questions: 1) If you want to know which functions read and write these variables, couldn't you just use the "find" function in an editor to spot the cases where the values in these variables are modified? 2) "That can be done, ... a complete waste of time...
Is an array name a pointer?
... its first element. So that assignment does the same as the previous one.
Now you can use p in a similar way to an array:
p[3] = 17;
The reason that this works is that the array dereferencing operator in C, [ ], is defined in terms of pointers. x[y] means: start with the pointer x, step y elemen...
What is the difference between map and flatMap and a good use case for each?
...ct
res0: Array[String] = Array("Roses are red", "Violets are blue")
Now, map transforms an RDD of length N into another RDD of length N.
For example, it maps from two lines into two line-lengths:
rdd.map(_.length).collect
res1: Array[Int] = Array(13, 16)
But flatMap (loosely speaking...
How to choose the right bean scope?
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@KishorPrakash: a while is now 6 months ago. ;-)
– Kukeltje
Nov 1 '19 at 10:22
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In Visual Studio C++, what are the memory allocation representations?
...de is two bytes: 0xCD followed by the desired interrupt number from 0-255. Now although you could issue 0xCD 0x03 for INT 3, Intel decided to add a special version--0xCC with no additional byte--because an opcode must be only one byte in order to function as a reliable 'fill byte' for unused memory....
How to overload __init__ method based on argument type?
...is using Python's excellent support for named arguments to implement this. Now, if I want to read the data from a file, I say:
obj.read(filename="blob.txt")
And to read it from a string, I say:
obj.read(str="\x34\x55")
This way the user has just a single method to call. Handling it inside, as ...
How do I increase the scrollback buffer in a running screen session?
...defscrollback and not scrollback (def stand for default)
What you need to know is if the file is not created ! You create it !
> cd ~ && vim .screenrc
And you add defscrollback 1000000 to it!
Or in one command
> echo "defscrollback 1000000" >> .screenrc
(if not created already)...
How slow are .NET exceptions?
...at it's meant to be, I really don't want to try to handle this as I don't know what else might be wrong."
When using exceptions in "only reasonable circumstances" I've never seen an application whose performance was significantly impaired by exceptions. Basically, exceptions shouldn't happen often ...