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What is the difference between javac and the Eclipse compiler?

...mes with its own compiler is also apparent because you can write, compile, and run Java code in Eclipse without even installing the Java SDK. A few examples where ECJ is preferred over javac is: Apache Tomcat uses ECJ to compile JSPs, IntelliJ IDEA has support for ECJ, as of GNU Compiler for Jav...
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Is there any advantage of using map over unordered_map in case of trivial keys?

... in the case of keys with simple types -- I took a look at the interfaces, and didn't find any significant differences that would impact my code. ...
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C pointers : pointing to an array of fixed size

...orrect. I'd say that every C developer comes to exactly the same discovery and to exactly the same conclusion when (if) they reach certain level of proficiency with C language. When the specifics of your application area call for an array of specific fixed size (array size is a compile-time constan...
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Is it possible to decrypt MD5 hashes?

...hat there are 2128 possible MD5 hashes. That is a reasonably large number, and yet it is most definitely finite. And yet, there are an infinite number of possible inputs to a given hash function (and most of them contain more than 128 bits, or a measly 16 bytes). So there are actually an infinite nu...
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Best way to get child nodes

...y best, I mean: most cross-browser compatible, fastest, most comprehensive and predictable when it comes to behaviour. A list of methods/properties I use as aliases: ...
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Regular expression that matches valid IPv6 addresses

...ular expressions, so I wrote one that works with POSIX regular expressions and PERL regular expressions. It should match: IPv6 addresses zero compressed IPv6 addresses (section 2.2 of rfc5952) link-local IPv6 addresses with zone index (section 11 of rfc4007) IPv4-Embedded IPv6 Address (section 2 ...
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How to pass arguments and redirect stdin from a file to program run in gdb?

... Pass the arguments to the run command from within gdb. $ gdb ./a.out (gdb) r < t Starting program: /dir/a.out < t share | improve this answer ...
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How do you know when to use fold-left and when to use fold-right?

I'm aware that fold-left produces left-leaning trees and fold-right produces right-leaning trees, but when I reach for a fold, I sometimes find myself getting bogged down in headache-inducing thought trying to determine which kind of fold is appropriate. I usually end up unwinding the entire proble...
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vs

... HTML5, they are equivalent. Use the shorter one, it is easier to remember and type. Browser support is fine since it was designed for backwards compatibility. share | improve this answer |...
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What is the difference between related SQLite data-types like INT, INTEGER, SMALLINT and TINYINT?

... has no data types, there are storage classes in a manifest typing system, and yeah, it's confusing if you're used to traditional RDBMSes. Everything, internally, is stored as text. Data types are coerced/converted into various storage locations based on affinities (ala data types assigned to column...