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In my HTML form I have input filed with type file for example :
5 Answers
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lexers vs parsers
...remely good at handling this simpler structure, and there are very high-performance regular-expression matching engines used to implement lexers.
Parsers are used to recognize "structure" of a language phrases. Such structure is generally far beyond what "regular expressions" can recognize, so one...
How does Java Garbage Collection work with Circular References?
...objects will be collected. Even though objects may point to each other to form a cycle, they're still garbage if they're cut off from the root.
See the section on unreachable objects in Appendix A: The Truth About Garbage Collection in Java Platform Performance: Strategies and Tactics for the gory...
Can I arrange repositories into folders on Github?
...t yet added to the project board
GitHub also supports tags now (in the form of topics).
Original answers 2012:
Another solution is for you to define repositories which reference other repos, declared as submodules.
That way, when you are cloning one of the repos (which references other repos), ca...
Array or List in Java. Which is faster?
...ience, are there any such choices in Java between abstraction and raw data forms that do make a significant difference in performance ?
– euphoria83
Apr 4 '09 at 17:53
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Synchronously waiting for an async operation, and why does Wait() freeze the program here
...of async function, without creating deadlock. Here is small example for WinForms app.
Imports System.Threading
Imports System.Runtime.CompilerServices
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
SyncMethod()
End Sub
' waiti...
Why is it a bad practice to return generated HTML instead of JSON? Or is it?
...ramework. I've used this approach many times and till now and found the performance satisfactory.
14 Answers
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Why is parenthesis in print voluntary in Python 2.7?
...and has nothing to do with forward or backward compatibility.
The general form for the print statement in all Python versions before version 3 is:
print expr1, expr2, ... exprn
(Each expression in turn is evaluated, converted to a string and displayed with a space between them.)
But remember th...
What do the python file extensions, .pyc .pyd .pyo stand for?
... make importing it again later easier (and faster).
.pyo: This was a file format used before Python 3.5 for *.pyc files that were created with optimizations (-O) flag. (see the note below)
.pyd: This is basically a windows dll file. http://docs.python.org/faq/windows.html#is-a-pyd-file-the-same-as-...
What is a serialVersionUID and why should I use it?
...ce...if it's stored or not, you probably don't care about de-serializing a form object), then you can ignore this.
If you're actually using serialization, it only matters if you plan on storing and retrieving objects using serialization directly. The serialVersionUID represents your class version,...