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Constructors vs Factory Methods [closed]
...
Use a factory only when you need extra control with object creation, in a way that couldn't be done with constructors.
Factories have the possibility of caching for example.
Another way to use factories is in a scenario where you do not know the type you w...
multiprocessing.Pool: When to use apply, apply_async or map?
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Back in the old days of Python, to call a function with arbitrary arguments, you would use apply:
apply(f,args,kwargs)
apply still exists in Python2.7 though not in Python3, and is generally not used anymore. Nowadays,
f(*args,**kwargs)
is preferred. The...
How to check if all elements of a list matches a condition?
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The best answer here is to use all(), which is the builtin for this situation. We combine this with a generator expression to produce the result you want cleanly and efficiently. For example:
>>> items = [[1, 2, 0], [1, 2, 0], [1, 2, 0]]
>>...
Unable to execute dex: GC overhead limit exceeded in Eclipse
...4-bit JVM. If you're on a 64 bit JVM, you can safely set it to anything smaller than your RAM size minus overhead for OS/other applications. On a 32 bit VM, you'll want to keep it smaller than about 1500M (on Linux) or 1100M (on Windows) because the VM needs to allocate contiguous address space, a...
How can I measure the speed of code written in PHP? [closed]
...ime"]=>
float(0) //too fast...
["f_result"]=>
string(11) "hello world"
}
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[SOLVED] Can't send payload > 23bytes(MTU setted to 128bytes) - #9 by ...
...ntent.cloneNode(!0),svgElement=splashTemplateClone.querySelector("svg"),svgString=(new XMLSerializer).serializeToString(svgElement),encodedSvg=btoa(svgString),splashWrapper=document.querySelector("#d-splash"),splashImage=splashWrapper&&splashWrapper.querySelector(".preloader-image")
if(splashImage){...
Why does the expression 0 < 0 == 0 return False in Python?
...o say 0 < x <= 5 than to say (0 < x) and (x <= 5).
These are called chained comparisons. And that's a link to the documentation for them.
With the other cases you talk about, the parenthesis force one relational operator to be applied before the other, and so they are no longer chained...
IE7 does not understand display: inline-block
...display: inline;
zoom: 1;
}
This will validate and you don't need an extra CSS file
Old answer
.frame-header
{
background:url(images/tab-green.png) repeat-x left top;
height:25px;
display:-moz-inline-box; /* FF2 */
display:inline-block; /* will also trigger hasLayout f...
Android: Difference between onInterceptTouchEvent and dispatchTouchEvent?
... are woefully inadequate about explaining this.
dispatchTouchEvent is actually defined on Activity, View and ViewGroup. Think of it as a controller which decides how to route the touch events.
For example, the simplest case is that of View.dispatchTouchEvent which will route the touch event to ei...
Example for boost shared_mutex (multiple reads/one write)?
I have a multithreaded app that has to read some data often, and occasionally that data is updated. Right now a mutex keeps access to that data safe, but it's expensive because I would like multiple threads to be able to read simultaneously, and only lock them out when an update is needed (the updat...