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How can I use NSError in my iPhone App?
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I'll try summarize the great answer by Alex and the jlmendezbonini's point, adding a modification that will make everything ARC compatible (so far it's not since ARC will complain since you should return id, which means "any object", but BOOL is not an object t...
What is the official “preferred” way to install pip and virtualenv systemwide?
...more like a virtual machine. Instead of taking care to install things side by side, you just create an whole new environment. The downside here is that 30+ virtualenvs later you might have used up quite bit of diskspace and cluttered up your filesystem.
As you can see, with the many options it is ...
What is the purpose of std::make_pair vs the constructor of std::pair?
...edef my pairs to provide simple syntax.
This shows the difference (example by Rampal Chaudhary):
class Sample
{
static int _noOfObjects;
int _objectNo;
public:
Sample() :
_objectNo( _noOfObjects++ )
{
std::cout<<"Inside default constructor of object "<<_...
Quick easy way to migrate SQLite3 to MySQL? [closed]
... these in PHP (RedBean), Python (Django's ORM layer, Storm, SqlAlchemy), Ruby on Rails (ActiveRecord), Cocoa (CoreData)
i.e. you could do this:
Load data from source database using the ORM class.
Store data in memory or serialize to disk.
Store data into destination database using the ORM class.
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When do items in HTML5 local storage expire?
...is closed and re-opened, the local data store for your_data gets refreshed by a server-side call.
Note that this is not exactly the same as removing the local data store, it is instead updating the local data store whenever the cookie expires. However, if your main goal is to be able to store more ...
Any way to make a WPF textblock selectable?
...his case, to disable the selection again, one needs to detach a TextEditor by using the reflection equivalent of this code:
_editor.TextContainer.TextView = null;
_editor.OnDetach();
_editor = null;
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Solr vs. ElasticSearch [closed]
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It seems autowarming is addressed by ElasticSearch now. See github.com/elasticsearch/elasticsearch/issues/1913
– unludo
Nov 21 '12 at 15:07
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What should every JavaScript programmer know? [closed]
...icial if you know how it's being done. You should learn to do those things by yourself before resorting to a framework.
– Javier Parra
Apr 13 '10 at 14:14
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Trigger change event of dropdown
...Still not sure what you are after. Are you trying to achieve a system whereby they select a country and it narrows the list down to the states in that country? If this is the case you will need to have an AJAX call to the server and send off the country selected and then return a liste of states in ...
How do I create a custom Error in JavaScript?
...ther methods do not work properly. FYI, you can instantiate vanilla Errors by passing them an existing error.
– Kyle Mueller
Apr 22 '14 at 15:50
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