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What does “program to interfaces, not implementations” mean?
...wered Apr 23 '10 at 10:31
this. __curious_geekthis. __curious_geek
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为iFrame添加动态载入效果，提高用户体验 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ng="no"></iframe>
<script language="javascript">
function stateChangeIE(_frame)
{
if (_frame.readyState=="interactive")
{
var loader = document.getElementById("loading");
loader.innerHTML = "";
loader.style.display = "none";
_fra...
ASP.NET Web API OperationCanceledException when browser cancels the request
...s a cancelled task like an unhandled exception (it logs the problem in the Application event log).
In the meantime, you could try something like the code below. It adds a top-level message handler that removes the content when the cancellation token fires. If the response has no content, the bug sh...
Is explicitly closing files important?
...of course for this magic to work the object must have the especial methods __enter__ and __exit__, in the latter the object do the close and any other cleanup stuff that need to be done at the end of the with statement...
– Copperfield
Mar 26 '16 at 13:02
...
How can I use different certificates on specific connections?
A module I'm adding to our large Java application has to converse with another company's SSL-secured website. The problem is that the site uses a self-signed certificate. I have a copy of the certificate to verify that I'm not encountering a man-in-the-middle attack, and I need to incorporate this...
How to change the timeout on a .NET WebClient object
...>
Public Class WebClient
Inherits System.Net.WebClient
Private _TimeoutMS As Integer = 0
Public Sub New()
MyBase.New()
End Sub
Public Sub New(ByVal TimeoutMS As Integer)
MyBase.New()
_TimeoutMS = TimeoutMS
End Sub
''' <summary>
''' S...
Create a pointer to two-dimensional array
...
Here you wanna make a pointer to the first element of the array
uint8_t (*matrix_ptr)[20] = l_matrix;
With typedef, this looks cleaner
typedef uint8_t array_of_20_uint8_t[20];
array_of_20_uint8_t *matrix_ptr = l_matrix;
Then you can enjoy life again :)
matrix_ptr[0][1] = ...;
Beware of...
How do I remove duplicate items from an array in Perl?
...is as demonstrated in perlfaq4:
sub uniq {
my %seen;
grep !$seen{$_}++, @_;
}
my @array = qw(one two three two three);
my @filtered = uniq(@array);
print "@filtered\n";
Outputs:
one two three
If you want to use a module, try the uniq function from List::MoreUtils
...
Avoid browser popup blockers
...create a blank popup on user action
var importantStuff = window.open('', '_blank');
Optional: add some "waiting" info message. Examples:
a) An external HTML page: replace the above line with
var importantStuff = window.open('http://example.com/waiting.html', '_blank');
b) Text: add the follow...
How do I find which rpm package supplies a file I'm looking for?
As an example, I am looking for a mod_files.sh file which presumably would come with the php-devel package. I guessed that yum would install the mod_files.sh file with the php-devel x86_64 5.1.6-23.2.el5_3 package, but the file appears to not to be installed on my filesystem.
...