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• What is the fastest / best Base64 en/decoder for Java ?

  - by mP

  Just found the MIG Base 64 utility but its over 6 years old since its last release. It would appear to be quicker than the Apache commons equivalent but I have yet to confirm by writing up an actual test. Has anyone verified its correctness which is always a worry. If someone takes a look at the methods, please note i a referring to the non fast methods which make assumptions trading possible correctness for pure speed.

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• How to store data with N columns

  - by iconiK

  I need a way to store an int for N columns. Basically what I have is this: Armies: ArmyID - UINT UnitCount1 - UINT UnitCount2 - UINT UnitCount3 - UINT UnitCount4 - UINT ... I can't possible add a column for each and every unit, so I need a fast way to store the number of each units in an army (you might have guesses it's for a game by now). Using XML is not an option as it will be dead slow.

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• Is it possible to programmatically clear the Ouput Window in Visual Studio?

  - by marco.ragogna

  Do you know a way to add some code that, during debug, programmatically clear the Output Window in Visual Studio? Or do you know some fast alternative like a key shortcut?

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• What is the fastest way to calculate a Windows folders size?

  - by LeeW

  I need to calculate the size of hundreds of folders, some will be 10MB some maybe 10GB, I need a super fast way of getting the size of each folder using C#. My end result will hopefully be: Folder1 10.5GB Folder2 230MB Folder3 1.2GB ...

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• Find most significant bit (left-most) that is set in a bit array

  - by Claudiu

  I have a bit array implementation where the 0th index is the MSB of the first byte in an array, the 8th index is the MSB of the second byte, etc... What's a fast way to find the first bit that is set in this bit array? All the related solutions I have looked up find the first least significant bit, but I need the first most significant one. So, given 0x00A1, I want 9.

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• If I never ever use HashSet, should I still implement GetHashCode?

  - by Dimitri C.

  I never need to store objects in a hash table. The reason is twofold: coming up with a good hash function is difficult and error prone. an AVL tree is almost always fast enough, and it merely requires a strict order predicate, which is much easier to implement. The Equals() operation on the other hand is a very frequently used function. Therefore I wonder whether it is necessary to implement GetHashCode (which I never need) when implementing the Equals function (which I often need)?

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• C++ compiler maximum number of classes

  - by aaa

  hello. In meta-programming number of classes grows quite fast. Is maximum number of classes modern compiler allows, for example g++, something to be concerned about? Thank you

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• Write an expression in javascript

  - by Hero

  hi everybody... I need a javascript code that split a string like below: Input string: "a=aa| b=b||b | c=cc" Output: a=>aa b=>b||b c=>cc I'd written different codes like: split(/ \ | /) or Split(/ \| (?! \ |) /) but didn't work. please help me... I really need it fast.

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• Make a collection with movies

  - by Dimitar Vouldjeff

  Hello, I need to make a collection with a lot of movies, but I was wandering if there is something like API or other method to make that database automatically? I will be using Ruby on Rails, but if there is a useful and fast tool, I will use it. Thank you.

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• Is there a tool to generate MVC code in C#?

  - by Rity

  I was working on a project with a colleague and went out for lunch one day. Given that we only spent a few days doing design and no coding, I was surprised to find out that after lunch, he had over 40 files completed (various classes, interfaces, DTOs, etc). He told me he is just a fast typist but I need to know the real deal. He hasn't been able to sustain that kind of productivity just the initial skeletal code but still, any ideas how he did this?

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• Facebook Privacy Permissions Design

  - by Ian

  Does anyone know the general layout of how facebook's privacy permissions system works (database)? I've been trying to figure out how they manage to have such a complex set of rules be applied to various content on their site, yet it remains fast. How are they doing that?

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• Options for open source front end for C++

  - by Arpan

  I am looking for options for an open source C++ front end that I could customize for my requirements. I do not need the back end implementation, just that it would help to find a fast and relatively bug free C++ front end that supports most standard features. Any suggestions? [I did google, clang seems to be an option but I don't have any experience with llvm] Arpan

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• A SELECT statement for Mysql

  - by Hossein

  I have this table: id,bookmarkID,tagID I want to fetch the top N bookmarkIDs for a given list of tags. Does anyone know a very fast solution for this? the table is quite large(12 million records) I am using MySql

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• Determining if two lines intersect

  - by Faken

  I have two lines that extend to infinity but both have a starting point. They are both described by a starting point and a vector in the direction of the line extending to infinity. I want to find out if the two lines intersect but i don't need to know where they intersect (its part of a collision detection algorithm). Everything i have looked at so far describes finding the intersection point of two lines or line segments. Anyone know a fast algorithm to solve this?

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• Way to know if two partitions are in one physical hard disk without WMI?

  - by Alon

  Hey. I have those partitions (in Windows) for example: Hard Disk 1 - Partition C, Partition D Hard Disk 2 - Partition E Is there any way in a program language to know if for example partition C and partition D are in one physical hard disk without WMI? I don't want to use WMI because it's slow - for this example, it took for me 0.5 seconds. I need it to be fast. Thank you.

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• What is a reliable way to detect which line break characters are used in a file?

  - by Fabian Jakobs

  I'm reading text files but I don't know in advance the kind of line ending used in this file. I need to know whether it uses UNIX \n or windows style \r\n line endings. What is a reliable and fast way to detect this?

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• vim trick to align blocks/end keywords in Ruby?

  - by randombits

  Is there a way to simply have my blocks and their closing end keyword align properly with vim? If I have a function which is nested with several conditions, things can start to get ugly fast. Can vim save the day?

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• How can I lock the cursor to the inside of a window on Mac OS X?

  - by ZorbaTHut

  I'm trying to put together a game for Mac OS X which involves a lot of fast action and flinging around of the mouse cursor. If the user wants to play in windowed mode, I'd quite like to lock the cursor to the inside of the window to avoid accidentally changing programs in the heat of battle (obviously this will cancel itself if the user changes programs or hits escape for the pause menu.) On Windows, this can be accomplished easily with ClipCursor(). I can't find an equivalent on Mac OS X. Is there one?

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• SimpleDB as Denormalized DB

  - by Max

  In an environment where you have a relational database which handles all business transactions is it a good idea to utilise SimpleDB for all data queries to have faster and more lightweight search? So the master data storage would be a relational DB which is "replicated"/"transformed" into SimpleDB to provide very fast read only queries since no JOINS and complicated subselects are needed.

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• .NET Based Radio Automation

  - by Brent Pabst

  I'm curious if anyone has seen an Open Source radio automation package (I found one in Russian on CodePlex) built on .NET In addition if I wanted to build something like this in a client server environment is WCF and WPF the best way to do it? Is it fast enough to trigger songs to play/encode on the server from a remote WPF client? Sort of vague questions but I wanted to get some community feedback.

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• Reduce Processing Time of accessing databse

  - by medma

  hello all, I m making an app which requires remote databse connection. I want the values in picker from database but when I click on button to invoke picker it takes some time to fetch the values and displaying. Is there any way to do it fast? and also is there any way to reduce the time of transition between 2 views? Thanx

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• Where to put Assertions?

  - by sud03r

  Hi, Having assertions for unexpected conditions is considered to be good defensive coding practice. I happen to place assertions whenever i think something unexpected may happen, but that now seems to be an overkill to me. Additionally, sometimes mild unexpected conditions that don't necessarily lead to crash may even cause failure on customer end. Is there a hard and fast rule to put assertions? Thanks.

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• Jquery Dropdown queue problem

  - by Sarfraz

  Hello, I have created a drop down with JQuery that can be seen here by clicking the Preview button on top: http://jsbin.com/ubire3/edit It works fine except for one problem. When i hover over the main hover links (blue ones) quickly eg going horizontally quickly hovering each top menu, the some submenus don't close. How do i make it so that even if i hover fast over them all other submenus are closed? Thanks.

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• find out the number of threads created by a short running program

  - by iamrohitbanga

  I have program that runs fast enough. I want to see the number of threads created by the program. ldd test shows use of library pthread. but how to find out number of threads created by the program. I only have command line access to the PC on which the program is run. The platform is linux.

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• Serializing and deserializing data - JavaScript

  - by RadiantHex

  Hi folks, I need to perform a lot of serializing and de-serializing in an application. The data is POST parameters and Cookie headers. Does anyone have any fast libraries to suggest or efficient ways to perform these operations?

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