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Replace transparency in PNG images with white background

...ings with Image Magick "convert" operations, but either nothing happens at all or I get an error. I don't want to go to an intermediate JPG form because I don't want the artifacts. Of course it's easy to do this in Gimp or Photoshop or whatever, but I'd really rather script it from the command lin...
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What is the difference between square brackets and parentheses in a regex?

...uestion uses keyword var in code, this probably is JavaScript). The use of php which runs on PCRE for preg matching will optimize away the lack of backtracking, however we're not in PHP either, so using classes [] instead of alternations | gives performance bonus as the match does not backtrack, and...
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How to list active / open connections in Oracle?

... Either you don't have permissions, or you didn't install the DBA views correctly. – S.Lott Jun 25 '09 at 10:24 4 ...
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What is the best way to profile javascript execution? [closed]

...e building a lot of javascript code and you want to determine what are actually the bottlenecks in the code. At first I want to see profile stats of every javascript function and execution time. Next would be including DOM functions. This combined with actions that slows things down like operation o...
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Scala framework for a Rest API Server? [closed]

...e been enjoying what I've been learning these days with the Scala book and all the blog posts and questions (it's not so ugly!) ...
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JSON, REST, SOAP, WSDL, and SOA: How do they all link together

...ntly doing some exams and I'm struggling through some concepts. These have all been 'mentioned' in my notes really but I didn't really understand how they all linked together. As far as my understanding is: ...
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Laravel - Eloquent or Fluent random row

...domOrder()->first(); or using the random method for collections: User::all()->random(); User::all()->random(10); // The amount of items you wish to receive Laravel 4.2.7 - 5.1: User::orderByRaw("RAND()")->get(); Laravel 4.0 - 4.2.6: User::orderBy(DB::raw('RAND()'))->get(); Laravel...
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Entity Framework Timeouts

... @ErikPetru, this is actually a very common practice and makes the code more readable. – Calvin Dec 10 '13 at 18:51 ...
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Search for all occurrences of a string in a mysql database [duplicate]

I'm trying to figure out how to locate all occurrences of a url in a database. I want to search all tables and all fields. But I have no idea where to start or if it's even possible. ...
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?

...ve' (for example) would be considered the same in searches. Sphinx doesn't allow partial index updates for field data though. The common approach to this is to maintain a delta index with all the recent changes, and re-index this after every change (and those new results appear within a second or tw...