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Queries vs. Filters

... exactly right. Any time you need to restrict the entire set of documents by some metric, that's usually a case that a filter is appropriate. So maybe by age, length, size, etc etc – Zach Jan 30 '13 at 20:44 ...
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Android Spanned, SpannedString, Spannable, SpannableString and CharSequence

...s the most commonly-used concrete implementation of CharSequence, followed by StringBuilder. Spanned is a CharSequence with "spans" indicating formatting to apply to portions of the text, where those spans cannot be modified. Spannable is a Spanned, adding in the ability to modify the spans (to ad...
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Memcache Vs. Memcached [duplicate]

... naming conventions (for those unfamiliar), which explains the frustration by the question asker: For many *nix applications, the piece that does the backend work is called a "daemon" (think "service" in Windows-land), while the interface or client application is what you use to control or access th...
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Java, Classpath, Classloading => Multiple Versions of the same jar/project

...ndException. If you have two classes with the same binary name, searchable by the same classloader, and you want to know which one of them you are loading, you can only inspect the way that specific classloader tries to resolve a class name. According to the java language specification, there is not...
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Golang production web application configuration

...t;_logs/stderr.log Another aspect is deployment. One option is to deploy by just sending binary file of the program and necessary assets. This is a pretty great solution IMO. I use the other option: compiling on server. (I’ll switch to deploying with binary files when I set up a so-called “Con...
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What does “dereferencing” a pointer mean?

...ointer containing a numeric memory address, with 1 referring to the second byte in the process's memory, 2 the third, 3 the fourth and so on.... What happened to 0 and the first byte? Well, we'll get to that later - see null pointers below. For a more accurate definition of what pointers store, a...
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How to use JNDI DataSource provided by Tomcat in Spring?

... what file exactly do you mean by "Tomcat's web context.xml" ? – Pavel Niedoba Jun 16 '15 at 11:23 1 ...
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Java8 Lambdas vs Anonymous classes

... state in fields, and this state is accessible to (and potentially mutable by) any method of the class. This state exists until the object is GC'd, i.e., it has indefinite extent, so it can persist across method calls. The only state with indefinite extent lambdas have is captured at the time the la...
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Why would you ever implement finalize()?

... Just make sure that an exception is never thrown by finalize(), or the garbage collector will not continue cleanup of that object, and you'll get a memory leak. – skaffman Oct 1 '08 at 16:04 ...
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Strip whitespace from jsp output

... The trimDirectiveWhitespaces is only supported by servlet containers that support JSP 2.1 and after, or in the case or Tomcat, Tomcat 6 (and some versions e.g. Tomcat 6.0.10 don't implement it properly - don't know about the others), there's more information about trimDir...