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Understanding reference counting with Cocoa and Objective-C
... If I don't, there will be a memory leak.
Example of object creation:
NSString* s = [[NSString alloc] init]; // Ref count is 1
[s retain]; // Ref count is 2 - silly
// to do this after init
[s release]; ...
LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method ca
...
Just save the string to a temp variable and then use that in your expression:
var strItem = item.Key.ToString();
IQueryable<entity> pages = from p in context.pages
where p.Serial == strItem
...
Clicking URLs opens default browser
... {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
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...
BeautifulSoup Grab Visible Webpage Text
...ml(html)
was returning 153 us per loop
It worked really well to return a string with rendered html. This nltk module was faster than even html2text, though perhaps html2text is more robust.
betterHTML = html.decode(errors='ignore')
%timeit html2text.html2text(betterHTML)
%3.09 ms per loop
...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...
Recommended: Declare your variables, for example when you try to append a string to an undefined variable. Or use isset() / !empty() to check if they are declared before referencing them, as in:
//Initializing variable
$value = ""; //Initialization value; Examples
//"" When you want ...
Remove all the children DOM elements in div
...
In Dojo 1.7 or newer, use domConstruct.empty(String|DomNode):
require(["dojo/dom-construct"], function(domConstruct){
// Empty node's children byId:
domConstruct.empty("someId");
});
In older Dojo, use dojo.empty(String|DomNode) (deprecated at Dojo 1.8):
dojo.em...
Passing just a type as a parameter in C#
...common approaches. First, you can pass System.Type
object GetColumnValue(string columnName, Type type)
{
// Here, you can check specific types, as needed:
if (type == typeof(int)) { // ...
This would be called like: int val = (int)GetColumnValue(columnName, typeof(int));
The other opti...
Ruby regular expression using variable name
...tr.gsub( /#{var}/, 'foo' ) # => "foo foo foo"
However, if your search string contains metacharacters and you do not want them interpreted as metacharacters, then use Regexp.escape like this:
var = "*This*"
str = "*This* is a string"
p str.gsub( /#{Regexp.escape(var)}/, 'foo' )
# => "foo is ...
How to use Session attributes in Spring-mvc
... attribute to session:
@RequestMapping(method = RequestMethod.GET)
public String testMestod(HttpServletRequest request){
ShoppingCart cart = (ShoppingCart)request.getSession().setAttribute("cart",value);
return "testJsp";
}
and you can get it from controller like this :
ShoppingCart cart =...
javax.faces.application.ViewExpiredException: View could not be restored
...tton value="Logout" action="logout?faces-redirect=true" />
or
public String logout() {
// ...
return "index?faces-redirect=true";
}
To instruct the browser to not cache the dynamic JSF pages, create a Filter which is mapped on the servlet name of the FacesServlet and adds the needed ...