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• App Engine - Java AppStats - It shows all requests as cpu time of 0.

  - by Spines

  All lines in my AppStats look like this: real=19ms cpu=0ms api=0ms overhead=0ms, it has the correct real time, but the other values are always 0. Anyone have this problem before or know how to fix this?

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• How to read a file from bottom to top in Ruby?

  - by two2twelve

  I've been working on a log viewer for a Rails app and have found that I need to read around 200 lines of a log file from bottom to top instead of the default top to bottom. Log files can get quite large, so I've already tried and ruled out the IO.readlines("log_file.log")[-200..-1] method. Are there any other ways to go about reading a file backwards in Ruby without the need for a plugin or gem?

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• How to troubleshoot "The server tag is not well formed. " error on sharepoint?

  - by David Lay

  I'm trying to edit a legacy wss3 sharepoint site. Messing around with a 700+ code lines aspx page I got a "The server tag is not well formed." error on sharepoint and The ?content=1 trick does not work. Anyone has a tip on how to get to the line that's causing the problem? I'm expecting something like the aspnet ysod, at least that's usefull. If it's worth something, I have access to the actual server.

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• Draw line in Google Earth that takes account of the globe's curvature

  - by ptrn

  I want to draw some lines that would follow either the longitude or latitude, but it doesn't take the globe's curvature in account. How would I go about doing that? I'm using KML.

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• Is external JavaScript source available to scripting context inside HTML page?

  - by John K

  When an external JavaScript file is referenced, <script type="text/javascript" src="js/jquery-1.4.4.min.js"></script> is the JavaScript source (lines of code before interpretation) available from the DOM or window context in the current HTML page? I mean by using only standard JavaScript without any installed components or tools. I know tools like Firebug trace into external source but it's installed on the platform and likely has special ability outside the context of the browser sandbox.

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• How can I check for unused import in many Python files?

  - by Thierry Lam

  I remember when I was developing in C++ or Java, the compiler usually complains for unused methods, functions or imports. In my Django project, I have a bunch of Python files which have gone through a number of iterations. Some of those files have a few lines of import statement at the top of the page and some of those imports are not used anymore. Is there a way to locate those unused imports besides eyeballing each one of them in each file? All my imports are explicit, I don't usually write from blah import *

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• How to skip a statement in Eclipse during debugging

  - by frankfwl

  Is it possible to skip a statement in Eclipse while debugging? Suppose the process stopped at breakpoint and I want to skip the breakpoint line ( or maybe a few lines below), can I do it? On the debug tab, it only has "Step into", "Step over" and "Step return" buttons. I did google around but couldn't find anything, hopefully I can find an answer here.

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• Reloading an object not working in rspec

  - by Eric Baldwin

  I am trying to test a controller method with the following code: it "should set an approved_at date and email the campaign's client" do @campaign = Campaign.create(valid_attributes) post :approve, id: @campaign.id.to_s @campaign.reload @campaign.approved_at.should_not be(nil) end However, when I run this test, I get the following error: Failure/Error: @campaign.reload ActiveRecord::RecordNotFound: Couldn't find Campaign without an ID When I run the analagous lines in the rails console, the reload works and the value is set as I need it to be. Why isn't reload working for me when I run the code in an rspec test?

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• How do I delete the first line in a file?

  - by Soop

  I can't search for a particular string, since they're all very similar, but I'd like something simple to chop out the first 4 lines in a file. They're all variable length too. I've had a a think about perl, and it all seems harder than I thought, but I'd like to do it in Perl, AWK or a shell command if possible. Does anybody have a simple way of doing this?

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• heroku - how to see all the logs

  - by josh

  I have a small app on heroku. Whenever I want to see the logs I go to the command line and do heroku logs That only shows me about 100 lines. Is there not a way to see complete logs for our application on heroku?

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• How do I replace multiple newlines with a single one with Perl's Regular Expressions?

  - by Simon A. Eugster

  I've got a document containing empty lines (\n\n). They can be removed with sed: echo $'a\n\nb'|sed -e '/^$/d' But how do I do that with an ordinary regular expression in perl? Anything like the following just shows no result at all. echo $'a\n\nb'|perl -p -e 's/\n\n/\n/s'

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• paragraph with vertical line on its left

  - by Flavius

  Hi What is the easiest way to have a paragraph with one or with two vertical black lines on its left? I have something like this so far: \newcommand{\attention}[1]{\begin{huge}!\end{huge} #1} But instead of a huge exclamation mark, I want a vertical line, whether the paragraph is one- or multi-line.

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• Finding simultaneous events in a database between times

  - by Tots

  I have a database that stores phone call records. Each phone call record has a start time and an end time. I want to find out what is the maximum amount of phone calls that are simultaneously happening in order to know if we have exceed the amount of available phone lines in our phone bank. How could I go about solving this problem?

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• Java API Method Run Times

  - by Mike

  Is there a good resource to get run times for standard API functions? It's somewhat confusing when trying to optimize your program. I know Java isn't made to be particularly speedy but I can't seem to find much info on this at all. Example Problem: If I am looking for a certain token in a file is it faster to scan each line using string.contains(...) or to bring in say 100 or so lines putting them to a local string them performing contains on that chunk.

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• What does this pointer-heavy C code do?

  - by justRadojko

  Could someone explain to me what should two following lines do: s.httpheaderline[s.httpheaderlineptr] = *(char *)uip_appdata; ++((char *)uip_appdata); This is taken from uIP code for microcontrollers. s - structure httpheaderline - http packet presented as a string httpheadrlineptr - integer value uip_appdata - received ethernet packet (string) If some more info is needed please let me know. BTW. Eclipse is reporting an error on the second line with message Invalid lvalue in increment so i'm trying to figure out how to solve this.

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• How do I combine two rows of same part, but add quantities?

  - by Tom

  I have table "PICKITEM" PARTID QTY A 1 A 3 B 11 C 8 D 5 D 3 I need a select statement that will return one line for like PARTIDs and add the qty field to together, yet also return the rest of the lines in the table as is PARTID QTY A 4 B 11 C 8 D 8 Probably a newb question, but I am new to SQL syntax and queries. Any help in getting me on the right path would be appreciated!

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• Is a string formatter that pulls variables from its calling scope bad practice?

  - by Eric

  I have some code that does an awful lot of string formatting, Often, I end up with code along the lines of: "...".format(x=x, y=y, z=z, foo=foo, ...) Where I'm trying to interpolate a large number of variables into a large string. Is there a good reason not to write a function like this that uses the inspect module to find variables to interpolate? import inspect def interpolate(s): return s.format(**inspect.currentframe().f_back.f_locals) def generateTheString(x): y = foo(x) z = x + y # more calculations go here return interpolate("{x}, {y}, {z}")

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• PHP: A way for a file to have its own MD5 inside?

  - by Eli

  Hi all, In considering several possible solutions to a recent task, I found myself considering how to get a php file that includes it's own MD5 hash. I ended up doing something else, but the question stayed with me. Something along the lines of: <?php echo("Hello, my MD5 is [MD5 OF THIS FILE HERE]"); ?> Whatever placeholder you have in the file, the second you take its MD5 and insert it, you've changed it.

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• JavaScript Self Executing Functions - What's the Difference?

  - by modernzombie

  I am very familiar with self executing functions from working with jQuery. (function($) { /* do stuff */ })(jQuery); Today I was reading the backbone.js source and noticed that they do this: (function() { /* do stuff */ }).call(this); Is this achieving the same thing? Would the following 2 lines of code do the same thing? (function($) { /* do stuff */ })(jQuery); (function($) { /* do stuff */ }).call(jQuery);

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• C++, class as parameter to a method, not template.

  - by ra170

  So, I came across an interesting method signature that I don't quite understand, it went along the lines of: void Initialize(std::vector< std::string > & param1, class SomeClassName * p); what I don't understand is the "class" keyword being used as the parameter, why is it there? Is it necessary to specify or it is purely superficial?

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• how to send text to a process in a shell script?

  - by Martin

  So I have a Linux program that runs in a while(true) loop, which waits for user input, process it and print result to stdout. I want to write a shell script that open this program, feed it lines from a txt file, one line at a time and save the program output for each line to a file. So I want to know if there is any command for: - open a program - send text to a process - receive output from that program Many thanks.

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• How to link latest stable version of libCURL using vc++2010

  - by Rollie

  On 2 separate machines in completely different environments (work, home) I've been unable to compile libCURL out of the box. Running nmake -f Makefile.vc mode=dll VC=10, I get an unresolved external symbol errors for _IdnToAscii and _IdnToUnicode. I believe the definitions are in Normaliz.lib, which is referenced in LFLAGS, but it either isn't finding it or the version I have doesn't have those functions. But I don't see any option to download this file...anyone have a good solution short of commenting out the 2 lines that use these functions?

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• How to "grep" out specific line ranges of a file

  - by Mike

  There are often times I'll grep -l whatev file to find what I'm looking for. Say the output is 1234: whatev 1 5555: whatev 2 6643: whatev 3 If I want to then just extract the lines between 1234 and 5555, is there a tool to do that? For static files I have a script that does wc -l of the file and then does the math to split it out with tail & head but that doesn't work out so well with log files that are constantly being written to.

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• HttpContext returning only "/"

  - by user281180

  I have the following two lines of codes in my model, however, both virtual and path have values "\". Where have I gone wrong? var virtual = VirtualPathUtility.ToAbsolute(HttpContext.Current.Request.ApplicationPath); var path =HttpContext.Current.Request.ApplicationPath;

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• how to traverse a file in python and c++ in backward way? And also store data in backward (bottom to

  - by mekasperasky

  Suppose i want to store 3 lines in a file both in python and C++ . I want to store it like this aaa bbb ccc .. But i am giving ccc input first then bbb then aaa. How will I traverse the file from bottom to top and also store from bottom to top/?

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