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prototype based vs. class based inheritance
... lots of singleton objects. In browser DOM, you find that window, document etc all singleton objects. Also, JavaScript is loosely typed dynamic language (as opposed to say Python which is strongly typed, dynamic language), as a result, a concept of object extension was implemented through the use of...
Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED
...For me, I should specify the conf, so I type >> (sudo) redis-server /etc/redis/redis.conf
– Romans 8.38-39
Jul 15 '14 at 5:57
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Should accessing SharedPreferences be done off the UI Thread?
...oncurrency (and a lot of Android devices run on yaffs... Droid, Nexus One, etc.) so if you avoid disk, you avoid getting stuck behind other in-flight or pending disk operations.
so you'll probably want to load the SharedPreferences during your onCreate() and re-use the same instance, avoiding the st...
How to break/exit from a each() function in JQuery? [duplicate]
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How do you join on the same table, twice, in mysql?
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Java current machine name and logged in user?
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What is the difference between SessionState and ViewState?
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REST API 404: Bad URI, or Missing Resource?
...ifference, but that doesn't imply that an empty string is an error. To stretch the analogy: You could have a method String getName() that has an implementation like this: return this.name == null ? "" : this.name. That's not incorrect unless you want the client to know that this.name is null.
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Should I use a data.frame or a matrix?
...ables) can be expected to be of different types (numeric/character/logical etc.). Matrices are for data of the same type.
Consequently, the choice matrix/data.frame is only problematic if you have data of the same type.
The answer depends on what you are going to do with the data in data.frame/ma...
Is the Scala 2.8 collections library a case of “the longest suicide note in history”? [closed]
...his case, map does not actually need the collection to be a list, or being ordered or being sortable or anything like that. The only thing that map cares about is that it can get access to all elements of the collection, one after the other, but in no particular order. And it does not need to know w...