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Some questions about Automatic Reference Counting in iOS5 SDK
...nk will be completed) for iOS 4.3.
I just read about ARC in iOS 5, and basically I understood that we will never need to release and retain objects anymore. My questions are:
...
node.js global variables?
... title: 'node',
assert: [Function],
version: 'v0.6.5',
_tickCallback: [Function],
moduleLoadList:
[ 'Binding evals',
'Binding natives',
'NativeModule events',
'NativeModule buffer',
'Binding buffer',
'NativeModule assert',
'N...
promise already under evaluation: recursive default argument reference or earlier problems?
...easier (for me) way to avoid the problem: just specify the argument in the call instead of the definition.
This does not work:
x = 4
my.function <- function(x = x){}
my.function() # recursive error!
but this does work:
x = 4
my.function <- function(x){}
my.function(x = x) # works fine!
Fu...
Does every Javascript function have to return a value?
...returned nothing at all, there would be no way of knowing what and when to call the next function, or to call event handlers and the like.
So to recap: No, a JS function needn't return anything as far as your code goes. But as far as the JS engines are concerned: a function always returns something...
How to safely open/close files in python 2.4
...
See docs.python.org:
When you’re done with a file, call f.close() to close it and free up any system resources taken up by the open file. After calling f.close(), attempts to use the file object will automatically fail.
Hence use close() elegantly with try/finally:
f = ope...
Why does google.load cause my page to go blank?
...se_thread/thread/e07c2606498094e6
Using one of the ideas, you could use a callback for the load to force it use append rather than doc.write:
setTimeout(function(){google.load('visualization', '1', {'callback':'alert("2 sec wait")', 'packages':['corechart']})}, 2000);
This demonstrates the 2 sec...
Prevent ViewPager from destroying off-screen views
... Hello. In what I am working on, the fragments/pages gets created dynamically so there is indefinite number of probable fragments. This case, it usually goes to 10 or less. Would it not be poor use of memory to use this solution to that much pages? The fragments will only hold the view, by the wa...
How to use ng-repeat for dictionaries in AngularJs?
... following simple example would work (assuming dictionary is in a variable called d):
my.component.ts:
keys: string[] = []; // declaration of class member 'keys'
// component code ...
this.keys = Object.keys(d);
my.component.html: (will display list of key:value pairs)
<ul *ngFor="let key...
Why is Class.newInstance() “evil”?
...ll the other reflection-based invocation methods throw a checked exception called InvocationTargetException that wraps any throwable thrown by the invoked method. Class.newInstance won't do that---it will throw the checked exception directly. The downside is that javac won't let you try to catch tho...
How can I get the list of a columns in a table for a SQLite database?
...
What you're looking for is called the data dictionary. In sqlite a list of all tables can be found by querying sqlite_master table (or view?)
sqlite> create table people (first_name varchar, last_name varchar, email_address varchar);
sqlite> se...