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  • R: How to write out a data.frame so that I can paste it into SO for others to read?

    - by John
    I have a large data.frame displaying some weird properties when plotted. I'd like to ask a question about it on Stackoverflow, to do that I'd like to write the data.frame out in a form that I can paste it into SO and somebody else can easily run it and have it back into a data.frame object again. Is there an easy way to accomplish this? Also, if it is really long, should I use paste bin instead of directly paste it here?

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  • C++: Why does space always terminate a string when read?

    - by Nullw0rm
    Using type std::string to accept a sentence, for practise (I haven't worked with strings in C++ much) I'm checking if a character is a vowel or not. I got this: for(i = 0; i <= analyse.length(); i++) { if(analyse[i] == 'a' || analyse[i] == 'e' [..etc..]) { ...vowels++; } else { ... ...consenents++; } This works fine if the string is all one word, but the second I add a space (IE: aeio aatest) it will only count the first block and count the space as a consenent, and quit reading the sentence (exiting the for loop or something). Does a space count as no character == null? Or some oddity with std::string?, It would be helpful to know why that is happening!

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  • I get an "EXC_BAD_ACCESS" when I try to read a NSString...

    - by micropsari
    Hello ! This is a (very) simplified version of my iPhone code : @interface x { NSString * name1; NSString * name2; } -init { name1 = @""; name2 = @""; } -(void) a { name1 = @"uhuh"; name2 = [foo bar]; // return a (NSString *) } -(void) b { NSLog(@"%@", name1); // it works NSLog(@"%@", name2); // there I get an EXC_BAD_ACCESS... } Why I have this problem ? And how can I solve it ? Thanks !

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  • Rails multi level model security

    - by rballz
    I have the need to do the following in Rails to mirror a desktop application: a User and an Office 'owns' a record, if you don't own the record on a user or office level you're kicked into the public realm. user gets read,write,delete to the model record office gets read/write/delete to the model record other or public gets read/write/delete to the model record e.g. UserA owns a model record with read/write/delete OfficeA owns a model with read/write other/public gets read I was wondering if a plugin/gem existed to grant this functionality?

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  • Is Android (read typical devices) fast enough for a game that requires plotting pixel by pixel rather than blitting

    - by mP
    i have an idea for an Android game which is a little different from the typical game that usually moves sprites(bitmaps) around the screen. Id want to plot lots of little pixels to create my visuals. PROS no bitmaps required pixel plotting of stuff like "fire" can react to wind. no need to scale bitmaps, works w/ any screen res (lets pretend device can handle more drawing because its got a bigger screen). CONS slower to plot pixels than blit bitmaps need lot of animation frames. WISHES id like to update my game in real time, more is better 30fps is good but not essential, 15fps is enough. PERFORMANCE Q... Is the typical Android device fast enough to plot say half a screenful of pixels w/ a default background ? if full screen is not practical what window size should be able to handle such refreshes

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  • Is there a c++ library that provides functionality to execute an external program and read its outpu

    - by BD at Rivenhill
    Basically, I'm looking for something that will allow me to replicate the following Perl code: my $fh = new FileHandle; $fh->open("foo |"); while (<$fh>) { # Do something with this line of data. } This is in the context of Linux, so a library that is specific to Windows will not help. I know how to write a program that does fork/exec/dup2 and all that basic shell-type jazz, but there are some fiddly details involving terminals that I don't feel like messing around with (and I don't have a copy of "Advanced Programming in the UNIX Environment" or a similar reference handy), so I'm hoping that someone has already solved this problem.

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  • How can I read and parse chunks of data into a Perl hash of arrays?

    - by neversaint
    I have data that looks like this: #info #info2 1:SRX004541 Submitter: UT-MGS, UT-MGS Study: Glossina morsitans transcript sequencing project(SRP000741) Sample: Glossina morsitans(SRS002835) Instrument: Illumina Genome Analyzer Total: 1 run, 8.3M spots, 299.9M bases Run #1: SRR016086, 8330172 spots, 299886192 bases 2:SRX004540 Submitter: UT-MGS Study: Anopheles stephensi transcript sequencing project(SRP000747) Sample: Anopheles stephensi(SRS002864) Instrument: Solexa 1G Genome Analyzer Total: 1 run, 8.4M spots, 401M bases Run #1: SRR017875, 8354743 spots, 401027664 bases 3:SRX002521 Submitter: UT-MGS Study: Massive transcriptional start site mapping of human cells under hypoxic conditions.(SRP000403) Sample: Human DLD-1 tissue culture cell line(SRS001843) Instrument: Solexa 1G Genome Analyzer Total: 6 runs, 27.1M spots, 977M bases Run #1: SRR013356, 4801519 spots, 172854684 bases Run #2: SRR013357, 3603355 spots, 129720780 bases Run #3: SRR013358, 3459692 spots, 124548912 bases Run #4: SRR013360, 5219342 spots, 187896312 bases Run #5: SRR013361, 5140152 spots, 185045472 bases Run #6: SRR013370, 4916054 spots, 176977944 bases What I want to do is to create a hash of array with first line of each chunk as keys and SR## part of lines with "^Run" as its array member: $VAR = { 'SRX004541' => ['SRR016086'], # etc } But why my construct doesn't work. And it must be a better way to do it. use Data::Dumper; my %bighash; my $head = ""; my @temp = (); while ( <> ) { chomp; next if (/^\#/); if ( /^\d{1,2}:(\w+)/ ) { print "$1\n"; $head = $1; } elsif (/^Run \#\d+: (\w+),.*/){ print "\t$1\n"; push @temp, $1; } elsif (/^$/) { push @{$bighash{$head}}, [@temp]; @temp =(); } } print Dumper \%bighash ;

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  • How can I read out the CSS text via Javascript as defined in the stylesheet?

    - by Monokai
    I was thinking of using Javascript to automatically transform CSS3 attributes like border-radius, transform, box-shadow, etc. to their browser specific counterparts. I did some research and found that you can iterate over the stylesheets defined via document.styleSheets. You can find the CSS rules via document.styleSheets[0].cssRules[0].cssText. I want to modify the CSS rules that contain CSS3 attributes by injecting the browser specific attributes with the appropriate vendor-prefix, like -webkit-border-radius, moz-border-radius, etc. However, it seems that the cssText property is preprocessed in each browser, to filter out CSS attributes that it doesn't understand. That practically breaks this idea. Question: is there any way to retrieve the CSS text exactly as defined in the stylesheet? Or: is there another way to accomplish this via Javascript? I'd like to maintain clean CSS files without the need for defining each attribute multiple times for each specific browser.

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  • Why are some strings displayed as garbage when I scroll my read-only multiline Win32 edit control ve

    - by sharptooth
    In my native C+ Win32 GUI application I have a property sheet with two property pages. One of the property pages contains an edit box: EDITTEXT IDC_EDIT_ID,x,y,width,height,ES_MULTILINE | ES_READONLY | NOT WS_BORDER | WS_VSCROLL | WS_HSCROLL | NOT WS_TABSTOP,WS_EX_STATICEDGE I set a multiline text to this edit box. The text has more lines than the edit can fit, so some of the text is clipped and a vertical scroll bar appears. When I scroll up with the mouse the lines that come "from under clip area" are drawn as garbage - it looks like first one line is drawn, then some other line is drawn on the same place without first painting the background. The lines that just move up - ones that were visible before scrolling and remain visible after scrolling are displayed allright. What's the reason and workaround for this behavior?

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  • Read from values from hidden field values in Jquery?

    - by James123
    Last two nights I am struggle with below code. The problem is I need to remember expanded (or) collapsed toggles sections and on page reload I have show them as is expanded (or) collapsed. $(function() { $('tr.subCategory') .css("cursor", "pointer") .attr("title", "Click to expand/collapse") .click(function() { $(this).siblings('.RegText').toggle(); }); $('tr[@class^=RegText]').hide().children('td'); }) I found small solution in another forum like this. Storing ".subCategory" id values in hidden field in commas-seperated values. In Asp.net page: <input id="myVisibleRows" type="hidden" value="<% response.write(myVisibleRowsSavedValue) %" /> In .js: var idsStr = $(#myVisibleRows).val(); Now My question is: How to store multiple values (.subCategory id) in hidden field when I click on toggle?. also How to parse them back and iterate them get ids and show toggles?. I am very very new to jQuery. Please some one help me out from this.

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  • Best practice for avoiding locks on a heavily read table?

    - by Luiggi
    Hi, I have a big database (~4GB), with 2 large tables (~3M records) having ~180K SELECTs/hour, ~2k UPDATEs/hour and ~1k INSERTs+DELETEs/hour. What would be the best practice to guarantee no locks for the reading tasks while inserting/updating/deleting? I was thinking about using a NOLOCK hint, but there is so much discussed about this (is good, is bad, it depends) that I'm a bit lost. I must say I've tried this in a dev environment and I didn't find any problems, but I don't want to put it on production until I get some feedback... Thank you! Luiggi

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  • Read/Write on Plist file without using the iPhone SImulator?

    - by Silent
    Hello all, i am using an example from the iphone developer book from apress. the problem is that this example only works on the simulator im trying to figure out how i can make it work on the device. This chapter isn't working at all. below is the sample code. data.plist is located in the resource folder. NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:kFilename]; Below then checks to see if the file is located. this is skipped, so im guessing this does not find the file. if ([[NSFileManager defaultManager]fileExistsAtPath:filePath]) { NSArray *array = [[NSArray alloc] initWithContentsOfFile:filePath]; BGDataSave = [array objectAtIndex:0]; NSLog(@"%@", BGDataSave); price.text = [array objectAtIndex:1]; percent.text = [array objectAtIndex:2]; salepriceLabel.text = [array objectAtIndex:3]; origpriceLabel.text = [array objectAtIndex:4]; }

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  • Is it normal to get SQLITE_BUSY on a read only database?

    - by dicroce
    I have 2 processes: 1 is writing to a sqlite database, 1 is reading from the same database. Occasioally, I get SQLITE_BUSY on my selects. Is this normal? Is their some option or way I could open the database so that it blocks until it CAN complete the query? (I tried the FULLMUTEX option on the open call but it appeared to have no effect).

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