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• Creating a string variable name from the value of another string

  - by NeonGlow

  In my bash script I have two variables 'CONFIG_OPTION' and 'CONFIG_VALUE' which contain string VENDOR_NAME and Default_Vendor respectively. I need to create a variable with name '$CONFIG_OPTION' ie VENDOR_NAME and assign the value in CONFIG_VALUE to newly created variable. How I can do this? I tried $CONFIG_OPTION=$CONFIG_VALUE But I am getting an error on this line as './Build.bash: line 137: VENDOR_NAME="Default_Vendor": command not found' Thanks.

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• division problems

  - by David

  This line of code: System.out.println ("aray[j], "+aray[j]+", divided by sum, "+sum+", equals: aray[j]/sum: "+ aray[j]/sum) ; is yeilding this line of text: aray[j], 21, divided by sum, 100, equals: aray[j]/sum: 0 why is it doing this? (everything is right eccept that the answer should be .21)

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• DrawPrimitive with alpha

  - by confusedman

  I'm trying to draw a line with the DrawPrimitive function in Direct3D. Can I draw tranparent line with the function? If I can, how to design it?

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• attatch '@' in front of String.

  - by sunglim

  some of code, has below line. readonly private string TARGET_BTN_IMG_URL = @"\ad1-sunglim\Test\"; in this line, why does @ need to be attatched ? and even in javascript too.

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• What ways are there to edit a function in R?

  - by Tal Galili

  Let's say we have the following function: foo <- function(x) { line1 <- x line2 <- 0 line3 <- line1 + line2 return(line3) } And that we want to change the second line to be: line2 <- 2 How would you do that? One way is to use fix(foo) And change the function. Another way is to just write the function again. Is there another way? (Remember, the task was to change just the second line)

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• Could you describe with a five lines max snippet why you felt in love with Python? [closed]

  - by systempuntoout

  I coded in Java for many years and after i saw this beauty: with open("spam.egg") as f: for line in f: print line i said to myself, i can't use Java's StreamVerboseCrapByteOpenBuffer stuff anymore. What's your snippet?

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• How do I send this email in Python, opening files and stuff?

  - by alex

  msg = EmailMessage(subject, body, from_email, [to_email]) msg.content_subtype = "html" msg.send() This is how I send an email in Django. But what if I want to open a text file and take into account all its line breaks and tabs. I want to take the body of the text file (with line breaks \n) and email it as text of the "body".

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• [dx] drawprimitive with alpha

  - by confusedman

  I'm trying to draw line with drawprimitive function in direct3d. Can I draw tranparent line with the function? If i can, how to design it?

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• Vim question : swap 2 distant lines in one move

  - by ThG

  Hello, (NB : my first post) In a Vim file, how may I swap - in one move - line 15 and line 33 (e.g.) ? Thanks in advance ThG

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• Optimizing grep (or using AWK) in a shell script

  - by Ode

  Hi - In my shell script, I am trying to search using terms found in a $sourcefile against the same $targetfile over and over. My $sourcefile is formatted as such: pattern1 pattern2 etc... The inefficient loop I have to search with is: for line in $(< $sourcefile);do fgrep $line $targetfile | fgrep "RID" >> $outputfile done I understand it would be possible to improve this by either loading the whole $targetfile into memory, or perhaps by using AWK? Thanks

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• Maintaining single instance application

  - by Semas

  Hello. I have been working on this application of mine and got this problem. Running program through command line with different arguments opens different .exe process. My question is how can i prevent from opening same file few times, and is it possible to send new command line arguments to already open instance of application. Thanks.

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• Python file - Want to change it to a function or a class

  - by curious2know

  Hello, I have a python program/file that I want to run repeatedly and calculate the averages of some variables over these runs. To do so, I thought it might be convenient to convert this program into a function or a class. One way I can think of is to add a def Main(): line at the top and indent every line manually within it. Is there an easier way? I am using pydev on eclipse. Thanks.

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• using sed to replace whole word containing '='?

  - by rashid

  EDIT i have something like this in a file: imagecolor=0 arrayimagecolorcopy=0 arrayimagecolorcopy3d=0 when i use sed -i -e 's/imagecolor=0/imagecolor=1/' it will change 1 and 2 line. But i only want it to replace first line. i also tried sed with \< \ and \b \b, but no luck. Could it be the '=' sign? Do we have something like -w as in grep command? Thank you.

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• which delimeter to use while spliting String

  - by London

  I need to split this line string in each line, I need to get the third word(film name) but as you see the delimeter is one big blank character in some cases its small like before the numbers at the end or its big as in front of numbers at front. I tried using string split with(" ") regex, and also \t but get the out of the bounds error. 400115305 Lionel_Atwill The_Song_of_Songs_(1933_film) 7587 400115309 Brian_Aherne A_Night_to_Remember_(1943_film) 7952 Did anyone have the same problem?

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• vim autoindent buffer on enter & exit

  - by anon

  For writable buffers, is there a way to tell vim to autoindent a file on entering & exiting the buffer? What I want is the equiv of: 1G=G to go first line indent .. until last line Thanks!

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• Perl like regex in Python

  - by anansi

  In Perl I would do something like this for taking different fields in a regexp, separating different fields by () and getting them using $ foreach $line (@lines) { $line =~ m/(.*?):([^-]*)-(.*)/; $field_1 = $1 $field_2 = $2 $field_3 = $3 } How could I do something like this in Python?

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• watch / read a growing log file with ruby

  - by KingInk

  I have a log file that is constantly growing, how can I watch and parse it via a ruby script. The script will parse each new line as it is written to the file and output something to the screen when the new line contains the string 'ERROR'

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• writing into a file in c.

  - by mekasperasky

  i have an char array b[20] which i want to write into a file . After every iteration the value of b[20] changes , so i would like to write the string in each line of the file in each iteration . So how can i change a new line in a file and also put in a array of character?

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• how to read the contents of a file In Erlang ?

  - by Zubair

  I know you can do something like this: readlines(FileName) -> {ok, Device} = file:open(FileName, [read]), get_all_lines(Device, []). get_all_lines(Device, Accum) -> case io:get_line(Device, "") of eof -> file:close(Device), Accum; Line -> get_all_lines(Device, Accum ++ [Line]) end. : Is there a one liner BIF that can do this too?

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• Plotting horizontal and vertical lines in Mathematica

  - by karlsbad

  In Mathematica, how do you plot a horizontal line at a given number? How do you plot a vertical line at a given number?

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• How to make Vim's global command :g/ work on per occurrence basis.

  - by holoduke

  Typically Vim's global command :g// works on per line basis. Is it possible to make it work on per occurrence basis as there could be more than one occurrence on a line.

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• Django - problem with {% url facebook_xd_receiver %}

  - by Gaurav

  I'm using {% url facebook_xd_receiver %} in one of my HTML files. This works just fine when I run my project using the command python manage.py runserver But the same project stops running and gives me a "TemplateSyntaxError" at the line {% url facebook_xd_receiver %} Can anyone please tell me what could be the difference between the dev server run through the command line and the apache server. Is there anything I'm missing out on while configuring the Apache server? Or is it a Django problem?

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• Play video from webserver

  - by Eyla

  Greeting, I'm creating a video play with silverlight 4 and C#. the player is working fine when I set the path for the target folder using this line of code. string FolderPath = this.Context.ApplicationInstance.Server.MapPath(@"~\Video\"); Now I want to place in C:\inetpub\wwwroot and I want to use the IP address of my IIS instead of the folder place. please advice how to modify this line of code to target my IIS. Thank you,

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• What are some good programming careers outside the business world?

  - by JimDaniel

  I'm tired of working in business, where everything is about money and the bottom line, although I do understand it's the bottom line that pays my salary. :-) Are there any good, and attainable, programming jobs outside the business world? How do you find them? It seems like all the jobs I see advertised are related to business (I live in Atlanta, GA).

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• How to read _popen directly without piping it to file?

  - by karikari

  How can I write the output of this line of code to a float variable instead of piping it to a file? The output of this line is a floating number. FILE *child = _popen("java -jar c:\\simmetrics.jar c:\\chtml.txt c:\\thtml.txt", "r");

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