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Why have header files and .cpp files? [closed]
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Well, the main reason would be for separating the interface from the implementation. The header declares "what" a class (or whatever is being implemented) will do, while the cpp file defines "how" it will perform those features.
This reduces dependencies so that code that uses the h...
Shorter syntax for casting from a List to a List?
I know its possible to cast a list of items from one type to another (given that your object has a public static explicit operator method to do the casting) one at a time as follows:
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Is int[] a reference type or a value type?
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arrays (arrays of arrays). All array
types are implicitly derived from
System.Array, which itself is derived
from System.Object. This means that
all arrays are always reference types
which are allocated on the managed
heap, and your app's variable contains
a reference to the arr...
Return XML from a controller's action in as an ActionResult?
What is the best way to return XML from a controller's action in ASP.NET MVC? There is a nice way to return JSON, but not for XML. Do I really need to route the XML through a View, or should I do the not-best-practice way of Response.Write-ing it?
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How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?
... extends the AsyncTask , Now in my main Activity I need to get the result from the OnPostExecute() in the AsyncTask . How can I pass or get the result to my main Activity?
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How can I get the source code of a Python function?
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If the function is from a source file available on the filesystem, then inspect.getsource(foo) might be of help:
If foo is defined as:
def foo(arg1,arg2):
#do something with args
a = arg1 + arg2
return a
The...
How to download and save a file from Internet using Java?
...m fos = new FileOutputStream("information.html");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
Using transferFrom() is potentially much more efficient than a simple loop that reads from the source channel and writes to this channel. Many operating systems can transfer bytes directly from...
In Python, when to use a Dictionary, List or Set?
...hone numbers to a list: [number1, number2, ...]).
When you want a mapping from keys to values, use a dict. (For example, when you want a telephone book which maps names to phone numbers: {'John Smith' : '555-1212'}). Note the keys in a dict are unordered. (If you iterate through a dict (telephone b...
Install an apk file from command prompt?
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You can use the code below to install application from command line
adb install example.apk
this apk is installed in the internal memory of current opened emulator.
adb install -s example.apk
this apk is installed in the sd-card of current opened emulator.
You can als...
Remove icon/logo from action bar on android
I've been trying to find some way of removing the icon/logo from the action bar but the only thing I've found after an hour of searching SO, Android's documentation and Google is how to remove the title bar in whole. That is not what I want. Only want to remove the icon/logo from the title bar.
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