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Database development mistakes made by application developers [closed]
...es to deal with problems that are trivial in langues like Java, C#, Delphi etc.
This lack of understanding manifests itself in a few ways.
Inappropriately imposing too much procedural or imperative logic on the databse.
Inappropriate or excessive use of cursors. Especially when a single query wou...
Checking if an instance's class implements an interface?
... "Yes!";
}
class_implements() is part of the SPL extension.
See: http://php.net/manual/en/function.class-implements.php
Performance Tests
Some simple performance tests show the costs of each approach:
Given an instance of an object
Object construction outside the loop (100,000 iterations)
_...
jQuery: Return data after ajax call success [duplicate]
... the result:
function testAjax(handleData) {
$.ajax({
url:"getvalue.php",
success:function(data) {
handleData(data);
}
});
}
Call it like this:
testAjax(function(output){
// here you use the output
});
// Note: the call won't wait for the result,
// so it will continue...
What are the recommendations for html tag?
...t;/a>
where ${uri} basically translates to $_SERVER['REQUEST_URI'] in PHP, ${pageContext.request.requestURI} in JSP, and #{request.requestURI} in JSF. Noted should be that MVC frameworks like JSF have tags reducing all this boilerplate and removing the need for <base>. See also a.o. What ...
Is it possible to implement dynamic getters/setters in JavaScript?
...//Calls the getter function.
console.log(obj.prop);
let copy = obj.prop;
//Etc.
//Calls the setter function.
obj.prop = 10;
++obj.prop;
//Etc.
Several things to note here:
You cannot use the value property in the property descriptor (not shown above) simultaneously with get and/or set; from the d...
Abort Ajax requests using jQuery
...abort the request.
var xhr = $.ajax({
type: "POST",
url: "some.php",
data: "name=John&location=Boston",
success: function(msg){
alert( "Data Saved: " + msg );
}
});
//kill the request
xhr.abort()
UPDATE:
As of jQuery 1.5 the returned object is a wrapper for the ...
What is the difference between the Eclipse Package Explorer and the Eclipse Project Explorer?
...ckage Explorer, I see various kind of Projects, Web service, Folder, File, etc.
In Package Explorer, I can drag'n'drop a class file between two packages, it will automatically do the refactoring (move and change package, and imports in other classes). Project Explorer just won't allow me to do a dra...
How can I get Eclipse to show .* files?
... is correct
@ If you're using Eclipse PDT, this is done by opening up the PHP explorer view
I just spent about half an hour looking for the little arrow, until I actually looked up what the 'PHP Explorer' view is. Here is a screenshot:
...
What is Java EE? [duplicate]
...rvlets and JSP and EJBs.
Now-a-days it probably means Spring and Hibernate etc.
Really what they are looking for is experience and understanding of the Java ecosystem, Servlet containers, JMS, JMX, Hibernate etc. and how they all fit together.
Testing and source control would be an important ski...
Does my application “contain encryption”?
...ur app uses only HTTPS or uses encryption only for authentication, tokens, etc., there is nothing you have to do, just include
<key>ITSAppUsesNonExemptEncryption</key><false/>
in your Info.plist and you are done.
2. Verification
You can verify this in itunes connect.
select ...