大约有 779 项符合查询结果（耗时：0.0205秒） [XML]
Android: AsyncTask vs Service
...ng tasks that cannot be run of the UI thread. A common example is fetching/processing data when a button is pressed.
Services are designed to be continually running in the background. In the example above of fetching data when a button is pressed, you could start a service, let it fetch the data, a...
Is it worth using Python's re.compile?
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edited Apr 24 '15 at 14:51
Daniel Standage
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
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edited Dec 8 '15 at 15:21
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HTML5 Canvas vs. SVG vs. div
What is the best approach for creating elements on the fly and being able to move them around? For example, let's say I want to create a rectangle, circle and polygon and then select those objects and move them around.
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What is git actually doing when it says it is “resolving deltas”?
...tays consistent.
Here's a chapter from the "Git Internals" section of the Pro Git book, which is available online, that talks about this.
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Retrieving the last record in each group - MySQL
...57 rows in the Posts table. This is running on MySQL 5.0.75 on my Macbook Pro 2.40GHz.
I'll write a query to find the most recent post for a given user ID (mine).
First using the technique shown by @Eric with the GROUP BY in a subquery:
SELECT p1.postid
FROM Posts p1
INNER JOIN (SELECT pi.owneru...
Enabling ProGuard in Eclipse for Android
The new documentation on ProGuard for Android says to add a line to the default.properties file in the project home directory. However, on opening this file, I read at the top:
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Is there a typical state machine implementation pattern?
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I prefer to use a table driven approach for most state machines:
typedef enum { STATE_INITIAL, STATE_FOO, STATE_BAR, NUM_STATES } state_t;
typedef struct instance_data instance_data_t;
typedef state_t state_func_t( instance_data_t *data );
state_t do_state...
How does Bluebird's util.toFastProperties function make an object's properties “fast”?
...today - here is a version that works with Node 7 (4+):
function enforceFastProperties(o) {
function Sub() {}
Sub.prototype = o;
var receiver = new Sub(); // create an instance
function ic() { return typeof receiver.foo; } // perform access
ic();
ic();
return o;
eval(...
Difference between UTF-8 and UTF-16?
... 8 bits, while in UTF-16 character length starts with 16 bits.
Main UTF-8 pros:
Basic ASCII characters like digits, Latin characters with no accents, etc. occupy one byte which is identical to US-ASCII representation. This way all US-ASCII strings become valid UTF-8, which provides decent backwar...