大约有 7,549 项符合查询结果（耗时：0.0264秒） [XML]
HTML5 best practices; section/header/aside/article elements
There is enough information about HTML5 on the web (and also on stackoverflow), but now I'm curious about the "best practices". Tags like section/headers/article are new, and everyone has different opinions about when/where you should use these tags. So what do you guys think of the following layout...
Virtual Memory Usage from Java under Linux, too much memory used
... but it's largely meaningless, and usually based on looking at the wrong information. The usual phrasing is something like "Hello World on Java takes 10 megabytes! Why does it need that?" Well, here's a way to make Hello World on a 64-bit JVM claim to take over 4 gigabytes ... at least by one form o...
Why are C# 3.0 object initializer constructor parentheses optional?
...It poses no problems for the sort of "partial program" analysis that is performed by the IDE's "IntelliSense" engine while you are typing. And so on.
the feature hits a common "sweet spot" for the larger object initialization feature; typically if you are using an object initializer it is precisely...
Long-lasting FB access-token for server to pull FB page info
...t infinite. Also the Acces Token Debugger has a link at the bottom of the form to extend a short-lived access token to a long-lived access token.
– SlimIT
Oct 9 '15 at 2:22
...
Use of 'prototype' vs. 'this' in JavaScript?
...
Really thorough and informative answer. I did some memory tests using the object structures above (A.prototype.hey vs object this.hey) and created 1000 instances of each. The memory footprint for the object property approach was around 100kb large...
Why shouldn't all functions be async by default?
...erations are not high latency, so it doesn't make any sense to take the performance hit that mitigates that latency. Rather, a key few of your operations are high latency, and those operations are causing the zombie infestation of async throughout the code.
if performance is the sole problem, s...
#define macro for debug printing in C?
... DEBUG_TEST where I used DEBUG.
If you insist on a string literal for the format string (probably a good idea anyway), you can also introduce things like __FILE__, __LINE__ and __func__ into the output, which can improve the diagnostics:
#define debug_print(fmt, ...) \
do { if (DEBUG) fpri...
What is Ember RunLoop and how does it work?
...order in which these actions (binding, rendering DOM elements, etc) are performed is determined by the Ember.run.queues array described above:
The run loop will start off on the first queue, which is sync. It'll run all of the actions that were scheduled into the sync queue by the Ember.run code. Th...
Why all the Active Record hate? [closed]
...accessing data without primary keys, with things that violate first normal form, where there are lots of stored procedures required to access the data, you are better off using something that is more of just a SQL wrapper. If your database is relatively well structured, ActiveRecord lets you take a...
Using Kafka as a (CQRS) Eventstore. Good idea?
...nsumption, after which it
will be discarded to free up space. Kafka's performance is effectively
constant with respect to data size so retaining lots of data is not a
problem.
So while messages can potentially be retained indefinitely, the expectation is that they will be deleted. This doesn...