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What is the difference between getFields and getDeclaredFields in Java reflection
I'm a little confused about the difference between the getFields method and the getDeclaredFields method when using Java reflection.
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Why is exception.printStackTrace() considered bad practice?
...e() constitutes valid (not good/great) exception handling behavior, only
if you do not have System.err being reassigned throughout the duration of the application's lifetime,
and if you do not require log rotation while the application is running,
and if accepted/designed logging practice of the a...
Detect Safari using jQuery
...ari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
Usage:
if (is_safari) alert('Safari');
Or for Safari only, use this :
if ( /^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {alert('Its Safari');}
...
How to scale an Image in ImageView to keep the aspect ratio
...o make the ImageView resize itself to fit the rescaled image. For example, if you have a rectangular image in what would normally be a square ImageView, adjustViewBounds=true will make it resize the ImageView to be rectangular as well. This then affects how other Views are laid out around the ImageV...
When to use Task.Delay, when to use Thread.Sleep?
... Thread.Sleep will block the current thread which causes a context switch. If you're using a thread pool this could also cause a new thread to be allocated. Both operations are quite heavy whereas the cooperative multi-tasking provided by Task.Delay etc is designed to avoid all of that overhead, max...
ASP.NET MVC Ajax Error handling
...
If the server sends some status code different than 200, the error callback is executed:
$.ajax({
url: '/foo',
success: function(result) {
alert('yeap');
},
error: function(XMLHttpRequest, textStatus,...
Default value of 'boolean' and 'Boolean' in Java
...ery wrapper uses a reference which has a default of null. Primitives have different default values:
boolean -> false
byte, char, short, int, long -> 0
float, double -> 0.0
Note (2): void has a wrapper Void which also has a default of null and is it's only possible value (without using ...
How do you connect to multiple MySQL databases on a single webpage?
...elow from @Troelskn
You can make multiple calls to mysql_connect(), but if the parameters are the same you need to pass true for the '$new_link' (fourth) parameter, otherwise the same connection is reused. For example:
$dbh1 = mysql_connect($hostname, $username, $password);
$dbh2 = mysql_connec...
Perforce for Git users? [closed]
...tools that ostensibly do the same thing, their approach could not be more different. This brief write-up will try to help new Perforce users coming from Git understand the new world they are in.
One brief detour before we dive in; if you prefer Git you can use Git with Perforce quite well. We provi...
Differences between action and actionListener
What is the difference between action and actionListener , and when should I use action versus actionListener ?
4 Ans...