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  • regex pattern to match only strings that don't contain spaces PHP

    - by Jamex
    Hi, I want to match the word/pattern that is contained in the variable, but only match against the words that don't have white spaces. Please give suggestions. $var = 'look'; $array = ('look', 'greatlook', 'lookgreat', 'look great', 'badlook', 'look bad', 'look ', ' look'); matches words: look, greatlook, lookgreat, badlook non matches: look great, bad look, look (trailing space(s)), (space(s)) look. The syntax of the below functions are OK, but it matches everything $match = preg_grep ("/$var/", $array); $match = preg_grep ("/^$var/", $array); (match words with 'look' at the start) but when I include the [^\s], it gives an error $match = preg_grep ("/$var[^\s]/", $array); Parse error: syntax error, unexpected '^', expecting T_STRING or T_VARIABLE TIA

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  • Can I get a faster output pipe than /dev/null ?

    - by naugtur
    Hi I am running a huge task [automated translation scripted with perl + database etc.] to run for about 2 weeks non-stop. While thinking how to speed it up I saw that the translator outputs everything (all translated sentences, all info on the way) to STDOUT all the time. This makes it work visibly slower when I get the output on the console. I obviously piped the output to /dev/null, but then I thought "could there be something even faster?" It's so much output that it'd really make a difference. And that's the question I'm asking You, because as far as I know there is nothing faster... (But I'm far from being a guru having used linux on a daily basis only last 3 years)

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  • Scripting language to embed into a Java server application

    - by Alexey Kalmykov
    I want to make a business logic of server side Java application as a set of scripts. So I need from a scripting engine: Maximum Java interoperability (i.e. Spring framework) Script reloading and recompiling Easy DB access from scripting language Clear and simple syntax (some DSL capabilities would be nice to have), easy learning curve for non-hardcore developers Performance and stability I had some experience in the similar project with Rhino and it was pretty good. But I want to see if there is something better. Currently I'm looking into Groovy. JRuby and Jython are a bit more complex than I need for this task. Any other suggestion? What to take into consideration?

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  • GPU Computing - # of GPUs supported

    - by TehTypoKing
    I currently have a desktop with 6 GPUs ( 3x HD 5970s ) in non-crossfire mode. Unfortunately, it seems that Windows 7 64bit only supports up to 4 GPUs. I have not been able to find a reliable source to deny or confirm this. If windows 7 has this limitation, is there a Linux flavor that supports more than 4 GPUs? In-case you are wondering, this is not for gaming but high-speed single precision computing. With this current setup ( if I can find 6gpu support ) I am looking to reach 13.8 Teraflops. Also, my motherboard does support 3 16x pci-xpress gen2 slots... and I have a 1500w powersupply plugged into a 20amp outlet. Windows is able to detect all 6 cores.. although, 2 of which displays the warning "Drivers failed to load". To recap: - Can windows support 6 GPUs? - If not, does Linux? Thank you.

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  • Using a set of numbers inside a database without creating a temporary table

    - by Zizzencs
    I have a set of numbers and a table in a database with the id (primary key) and text (not null) columns. I would like to create a query that returns all the numbers in the set and the associated text from the table. Unfortunately not all numbers exist in the database's id column, so this won't work: select id, text from table where id in (<set of numbers>) For the non-existing ids the best would be to return null as the text from the query. Is there a way to produce the desired output without first creating a temporary table from the set inside the database? The database engine in use is a Microsoft SQL Server 2008 SP1 but I'd be interested in any solution with any database engine.

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  • Using beautifulsoup to extract text between line breaks (e.g. <br /> tags)

    - by Michael Altman
    I have the following HTML that is within a larger document <br /> Important Text 1 <br /> <br /> Not Important Text <br /> Important Text 2 <br /> Important Text 3 <br /> <br /> Non Important Text <br /> Important Text 4 <br /> I'm currently using BeautifulSoup to obtain other elements within the HTML, but I have not been able to find a way to get the important lines of text between <br /> tags. I can isolate and navigate to each of the <br /> elements, but can't find a way to get the text in between. Any help would be greatly appreciated. Thanks.

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  • Modifying the Google Drive menu interface

    - by Dangerbunny
    So I'm working on a web-app for the Google Marketplace that's going to involve integration with Google Drive. Part of what I want to be able to do with the app involves something along the lines of adding a menu option to the Drive menu interface. For instance, you could be editing a document in drive and browse to File-"My new fancy option." Does anyone know if this is possible? Or if it is not, is there another way of adding this sort of custom action functionality where you are able to perform non Drive standard actions on files from within the Drive interface?

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  • Images saved with D3DXSaveSurfaceToFile will open in Paint, not Photoshop

    - by bsruth
    I'm using D3DXSaveSurfaceToFile to save windowed Direct3D 9 surfaces to PNG, BMP and JPG files. There are no errors returned from the D3DXSaveSurfaceToFile call and all files open fine in Windows Photo Viewer and Paint. But they will not open in a higher end image editing program such as Paint Shop Pro or Photoshop. The error messages from these programs basically say that the file is corrupted. If I open the files in Paint and then save them in the same file format with a different file name, then they'll open fine in the other programs. This leads me to believe that D3DXSaveSurfaceToFile is writing out non-standard versions of these file formats. Is there some way I can get this function to write out files that can be opened in programs like Photoshop without the intermediate step of resaving the files in Paint? Or is there another function I should be using that does a better job of saving a Direct3D surfaces to an image?

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  • Splitting a double vector into equal parts

    - by Cosmin
    Greetings, Any input on a way to divide a std::vector into two equal parts ? I need to find the smallest possible difference between |part1 - part2|. This is how I'm doing it now, but from what you can probably tell it will yield a non-optimal split in some cases. auto mid = std::find_if(prim, ultim, [&](double temp) -> bool { if(tempsum >= sum) return true; tempsum += temp; sum -= temp; return false; }); The vector is sorted, highest to lowest, values can indeed appear twice. I'm not expecting part1 and part2 to have the same numbers of elements, but sum(part1) should be as close as possible to sum(part2) For example if we would have { 2.4, 0.12, 1.26, 0.51, 0.70 }, the best split would be { 2.4, 0.12 } and { 1.26, 0.51, 0.70 }. If it helps, I'm trying to achieve the splitting algorithm for the Shannon Fano encoding. Any input is appreciated, thanks!

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  • Where/When does C# and the .NET Framework fail to be the right tool?

    - by Nate Bross
    In my non-programming life, I always attempt to use the approprite tool for the job, and I feel that I do the same in my programming life, but I find that I am choosing C# and .NET for almost everything. I'm finding it hard to come up with (realistic business) needs that cannot be met by .NET and C#. Obviously embedded systems might require something less bloated than the .NET Micro Framework, but I'm really looking for line of business type situations where .NET is not the best tool. I'm primarly a C# and .NET guy since its what I'm the most comfertable in, but I know a fair amount of C++, php, VB, powershell, batch files, and Java, as well as being versed in the web technologes (javascript, html/css). But I'm open minded about it my skill set and I'm looking for cases where C# and .NET are not the right tool for the job. The bottom line here, is that I feel that I'm choosing C# and .NET simply because I am very comfertable with it, so I'm looking for cases where you have chosen something other than .NET, even though you are primarly a .NET developer.

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  • snprintf and Visual Studio 2010

    - by Andrew
    I'm unfortunate enough to be stuck using VS 2010 for a project, and noticed the following code still doesn't build using the non-standards compliant compiler: #include <stdio.h> #include <stdlib.h> int main (void) { char buffer[512]; snprintf(buffer, sizeof(buffer), "SomeString"); return 0; } (fails compilation with the error: C3861: 'snprintf': identifier not found) I remember this being the case way back with VS 2005 and am shocked to see it still hasn't been fixed. Does any one know if Microsoft has any plans to move their standard C libraries into the year 2010?

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  • Tool to diagonalize large matrices

    - by Xodarap
    I want to compute a diffusion kernel, which involves taking exp(b*A) where A is a large matrix. In order to play with values of b, I'd like to diagonalize A (so that exp(A) runs quickly). My matrix is about 25k x 25k, but is very sparse - only about 60k values are non-zero. Matlab's "eigs" function runs of out memory, as does octave's "eig" and R's "eigen." Is there a tool to find the decomposition of large, sparse matrices? Dunno if this is relevant, but A is an adjacency matrix, so it's symmetric, and it is full rank.

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  • JXTreeTable and BorderHighlighter Drawing Border on All Rows

    - by Kevin Rubin
    I'm using a BorderHighlighter on my JXTreeTable to put a border above each of the table cells on non-leaf rows to give a more clear visual separator for users. The problem is that when I expand the hierarchical column, all cells in the hierarchical column, for all rows, include the Border from the Highlighter. The other columns are displaying just fine. My BorderHighlighter is defined like this: Highlighter topHighlighter = new BorderHighlighter(new HighlightPredicate() { @Override public boolean isHighlighted(Component component, ComponentAdapter adapter) { TreePath path = treeTable.getPathForRow(adapter.row); TreeTableModel model = treeTable.getTreeTableModel(); Boolean isParent = !model.isLeaf(path.getLastPathComponent()); return isParent; } }, BorderFactory.createMatteBorder(2, 0, 0, 0, Color.RED)); I'm using SwingX 1.6.5.

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  • Database indexes and their Big-O notation

    - by miket2e
    I'm trying to understand the performance of database indexes in terms of Big-O notation. Without knowing much about it, I would guess that: Querying on a primary key or unique index will give you a O(1) lookup time. Querying on a non-unique index will also give a O(1) time, albeit maybe the '1' is slower than for the unique index (?) Querying on a column without an index will give a O(N) lookup time (full table scan). Is this generally correct ? Will querying on a primary key ever give worse performance than O(1) ? My specific concern is for SQLite, but I'd be interested in knowing to what extent this varies between different databases too.

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  • Visual C++ 2008 doesn't recognize Windows declared types

    - by David Thornley
    I have a program that doesn't seem to recognize declared types in the latest U3D software. There's a line typedef BOOL (WINAPI* GMI)(HMON, LPMONITORINFOEX); which gets the error: Error 1 error C2061: syntax error : identifier 'LPMONITORINFOEX' c:\Projects\U3D\Source\RTL\Platform\Common\Win32\IFXOSRender.cpp 28 and a line MONITORINFOEX miMon; which gets Error 5 error C2065: 'miMon' : undeclared identifier c:\Projects\U3D\Source\RTL\Platform\Common\Win32\IFXOSRender.cpp 49 Error 3 error C2065: 'MONITORINFOEX' : undeclared identifier c:\Projects\U3D\Source\RTL\Platform\Common\Win32\IFXOSRender.cpp 49 The program's first non-comment statement is #include <windows.h>, which includes winuser.h, which defines these identifiers. In Visual Studio, I can right-click on them and go to the definition (a typedef) and from the typedef to the struct. WINAPI is defined in WinDef.h, so that seems to be working. There are no redefinitions of LPMONITORINFOEX or MONITORINFOEX in any other file. So, how can this be happening, and what can I do about it?

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  • How to pay your users? (alternatives to PayPal)

    - by Sosh
    Hi, I would like to know what best non-paypal options are for paying users of your website (for services rendered for instance). How are others doing this at the moment? If you could mention specific services providers that would be most useful. This would have to work internationally, not be limited to one country. Thank you Update (in response to comments) Reason for excluding PayPal: I've had bad experiences with them in the past. Amounts: Well, i don't mean micropayments of a few cents, but could be anything from 40EUR - 500 EUR. Currency: I didn't mention this, but I would be paying in Euros.

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  • OAuth 2.0: Can a user-agent client avoid forwarding fragments?

    - by Bosh
    In the OAuth 2.0 draft specification, user-agent clients receive authorization in the form of a bearer token via redirection (from an authentication server) to a URL such as HTTP/1.1 302 Found Location: http://example.com/rd#access_token=FJQbwq9&expires_in=3600 According to Section 3.5.2 it is then the user-agent's job to GET the URL in question, but "The user-agent SHALL NOT include the fragment component with the request." In other words, as a result of the example redirection above, the user-agent should GET /rd HTTP/1.1 Host: example.com without passing #access_token to the server. My question: what user agents behave this way? I thought redirection in Firefox, for example, would (logically) include the fragment in the GET request. Am I just wrong about this, or does the OAuth 2.0 specification rely on non-standard user-agent behavior?

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  • Why "do...while" does not exist in F#

    - by Kev
    I cannot find "do...while..." I have to code like this: let bubbleSort a= let n = Array.length a let mutable swapped = true let mutable i = 0 while swapped do swapped <- false for j = 0 to n-i-2 do if a.[j] > a.[j+1] then let t = a.[j] a.[j] <- a.[j+1] a.[j+1] <- t swapped <- true i <- i+1 The code is bad without "do...while". Sadly, "break/continue" are also not available. Is F# not suitable for non-functional-programming?

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  • Open source C compiler in C#?

    - by Dinah
    I've been getting into compiler creation. I've found some terrific beginner stuff and advanced stuff but nothing in the middle. I've created 3 different simple proof-of-concept compilers for toy languages but I want to expose myself to something real. The most straight forward real language in terms of syntax seems to be C. Since the language I'm most comfortable with right now is C#, I'd love to study the source code of a real non-tutorial C compiler written in C#. Does one (with source code available) exist?

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  • What does the 'X' in .aspx, docx, xlsx, etc... represent?

    - by Serapth
    It's one of those things you just take for granted until one day someone asks you and you realize you can't answer it. Much like for years I never questioned the use of 1033 directories in Microsoft products for years until one day, someone asked me about it. Around the release of .NET and Office 2007, Microsoft added an x to basically all of their extensions and I frankly took it as representing XML, but that simply doesn't make sense with .aspx. So, I realize this is a very non technical question, but now that the question has been asked of me and my googling hasn't given me an answer, can anyone tell me with authority what the X represents? Is it extended? Xml? Or is there no meaning behind it?

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  • VMR9Allocator (DirectShow .NET + SlimDX)

    - by faulty
    I was trying to convert and run the VMR9Allocator sample for DirectShow .NET with SlimDX instead of MDX. I got an exception when it reach this line return vmrSurfaceAllocatorNotify.SetD3DDevice(unmanagedDevice, hMonitor) In the AdviseNotify method in Allocator.cs. The exception is "No such interface supported", and the hr return was "0x80004002". The sample runs fine with MDX, and my SlimDx is also working, as I've written another 3d apps using it, working fine. I can't seems to find out what went wrong, no help from googling as well. Apparently not much ppl uses this combination, and non that i can find actually stumble into this problem. Any idea guys? NOTE: I've asked the same question over at gamedev.net 2 weeks back, no answer thus far.

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  • Pre-load audio files at the client-side for later use

    - by awj
    I'm building an online test which implements audio (mp3) using the native audio player (i.e. non Flash-based). The test shows one question at a time and loads each subsequent question asynchronously. Some questions have an accompanying audio file, others don't, and the audio files can be several MB in size. So what I'm hoping to do is to preload the audio files client-side at the start of the test and then move these into place when the relevant question comes up. So far I've tried loading an audio file into a QuickTime player, then when that question comes up I use jQuery's clone(true) method to copy this into a part of the page which is displayed. However, when I do this the QuickTime player has to reload the audio file from source. Same is true for Windows Media Player. Does anyone have any suggestions as to how I can preload the audio client-side and then call it forward when needed?

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  • Python IPC, popen too slow

    - by UnableToLoad
    i need to run a subprocess (./myProgram) form python script and get output, actually i do this: import subprocess proc = subprocess.Popen('./generate_out', shell=False, stdout=subprocess.PIPE, ) while proc.poll() is None: out = proc.stdout.readline() data = doStuff(out) print(data) but is slow, sometimes pass a lot of time between the output produced by ./generate_out and the print(data), knowing that my doStuff() function is very fast, i think there is some buffer slowing down my pipe... Notes: ./generate_out, generates potentially an unlimited number of lines of finite length each. It seems that when too few chars are put in the pipe between the two processes nothing happens, then when enough is produced i get a huge print (non the expected behaviour!) sometimes i wait many seconds (10-20 and more) between generate_out print and python print) what can i do? maybe communicate() is faster? anithing else? Thank you a lot!

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  • Writing a DTD: How to achieve this children setup

    - by Boldewyn
    The element tasklist may contain at most one title and at most one description, additionally any number (incl. 0) task elements in any order. The naive approach is not applicable, since the order should not matter: <!ELEMENT tasklist (title?, description?, task*) > Alternatively, I could explicitly name all possible options: (title, description?, task*) | (title, task+, description?, task*) | (task+, title, task*, description?, task*) | (description, title?, task*) | (description, task+, title?, task*) | (task+, description, task*, title?, task*) | (task*) but then it's quite easy to write a non-deterministic rule, and furthermore it looks like the direct path to darkest madness. Any ideas, how this could be done more elegantly? And no, an XSD or RelaxNG is no option. I need a plain, old DTD.

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  • Implementation of APIs on diferent platforms

    - by b-gen-jack-o-neill
    OK, this is basicly just about any non-default OS API running on all different OS. But for my example let´s consider platform Windows, API SDL (Simple DirectMedia Layer). Actually this question came to my mind when I was reading about SDL. Originally, I thought that on Windows (and basicly any other OS) you must use OS API to make certain actions, like wrtiting to screen, creating window and so on, becouse that API knows what kernel calls and system subroutines calls it has to do. But when I read about SDL, I surprised me, becouse, you cannot make computer to do anything more than OS can, since you cannot acess HW directly, only thru OS API, from Console allocation to DirectX. So, my question actually is, how does this not-default-OS APIs work? Do they use (wrap) original system API (like MFC wraps win32 api)? Or, do they actually have direct acess to Windows kernel? Or is there any third, way in between? Thanks.

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