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• Does learning a functional language make a better OOP programmer?

  - by GavinH

  As a Java/C#/C++ programmer I hear a lot of talk about functional languages, but have never found a need to learn one. I've also heard that the higher level of thinking introduced in functional languages makes you a better OOP/procedural language programmer. Can anyone confirm this? In what ways does it improve your programming skills? What is a good choice of language to learn with the goal of improving skills in a less sophisticated language?

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• Comment programmer le robot humanoïde Nao en .Net ? Extrait d'une session sur le sujet donnée aux TechDays 2011

  Comment programmer le robot humanoïde Nao en .Net ? Extrait d'une session sur le sujet donnée aux TechDays 2011 La semaine dernière, à l'occasion des TechDays et pour présenter son Developer Program, l'équipe d'Aldebaran Robotics a donné une conférence sur la manière de programmer son petit robot Nao via .Net, ce qui se révèle somme toute assez simple. Extrait, avec des actions basiques comme dire "Bonjour" ou tourner la tête :

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• What non-programming books should a programmer read to help develop programming/thinking skills?

  - by FeatureCreep

  There are a lot of questions about what programming books should be on the programmer's bookshelf. How about non-programming related books that can help you become a better programmer or developer? It would also be interesting to know why they would help. My first choice would be Sun Tzu's "Art of War" (however cliché), because it made it obvious that the success of any project depends on the strength of its weakest link (and warfare is a big project).

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• Android/Java learning resources for an experienced Objective C programmer?

  - by hotpaw2

  What resources are available for an experienced Objective C programmer to quickly and efficiently learn and get up to speed with Java, the Android SDK API's and Eclipse IDE? There seems to be at least one book and several web sites for experienced Java programmers who want to learn native Objective C programming, iOS UIKit and Xcode, but who don't want to waste time with a lot of basic programming concepts that an experienced Java programmer usually already knows. What are the available advanced educational materials for the inverse direction?

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• Is it possible to measure if someone is a 'good' programmer? [closed]

  - by Alex Angas

  Possible Duplicate: How Can I Know Whether I Am a Good Programmer? There are a number of questions here about recognising or considering someone as a good/bad programmer. These are all subjective. What I'd like to know is if there is a way to measure this. I realise there will and should be a subjective element to it. But is it also possible to have some actual numbers to back up (or contradict) such an assessment?

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• What non-programming books should a programmer read (that helps developing programming skills/thinking)?

  - by FeatureCreep

  There are a lot of questions about what programming books should be on the programmer's bookshelf. How about non-programming related books that can help you become a better programmer or developer? It would also be interesting to know why they would help. My first choice would be Sun Tzu's "Art of War" (however cliché), because it made it obvious that the success of any project depends on the strength of its weakest link (and warfare is a big project).

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• Sed problem in a Bash script

  - by moata_u

  Hello there. I'm having a problem using the sed command . I'm trying to write a bash script that does the following : search for the line that contain :@ then save the line that contained :@ and replace it with new line as in the following: #! /bin/bash echo "Please enter the ip address of you file"<br> read ipnumber<br> find=`grep ':@' application.properties` # find the line<br> input="connection.url=jdbc\racle\:thin\:@$ipnumber\:1521\:billz" # preparing new line<br> echo `sed "s/'${find}'/'${input}'/g" application.properties` # replace old with new line <br> The problem is: nothing happens. I've already tried to use "${find}" instead of '${find}'

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• Why is this rkhunter script sending empty emails?

  - by Oddthinking

  I have started running rkhunter (a security monitoring tool) and I have finally managed to clear all of its warnings. Now, a cron job runs every day to monitor my machine. Rather than send me an email of warnings, it sends me an email with no body - which I don't really want. Looking at the (unedited, straight out of the box) /etc/cron.daily/rkhunter script, it contains this snippet of shell code: if [ -s "$OUTFILE" ]; then ( echo "Subject: [rkhunter] $(hostname -f) - Daily report" echo "To: $REPORT_EMAIL" echo "" cat $OUTFILE ) | /usr/sbin/sendmail $REPORT_EMAIL fi The -s clause should prevent empty emails from being sent, right? Does anyone have an explanation why this would still send empty emails?

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• SQL SERVER – Script to Find First Day of Current Month

  - by Pinal Dave

  Earlier I wrote a blog post about SQL SERVER – Query to Find First and Last Day of Current Month and it is a very popular post. In this post, I convert the datetime to Varchar and later on use it. However, SQL Expert Michael Usov has made a good point suggesting that it is not always a good idea to convert datetime to any other date format as it is quite possible that we may need it the value in the datetime format for other operation. He has suggested a very quick solution where we can get the first day of the current month with or without time value and keep them with datatype datetime. Here is the simple script for the same. -- first day of month -- with time zeroed out SELECT CAST(DATEADD(DAY,-DAY(GETDATE())+1, CAST(GETDATE() AS DATE)) AS DATETIME) -- with time as it was SELECT DATEADD(DAY,-DAY(GETDATE())+1, CAST(GETDATE() AS DATETIME)) Here is the resultset: Reference: Pinal Dave (http://blog.SQLAuthority.com)Filed under: PostADay, SQL, SQL Authority, SQL DateTime, SQL Function, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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• Debugging "Premature end of script headers" - WSGI/Django [migrated]

  - by Marcin

  I have recently deployed an app to a shared host (webfaction), and for no apparent reason, my site will not load at all (it worked until today). It is a django app, but the django.log is not even created; the only clue is that in one of the logs, I get the error message: "Premature end of script headers", identifying my wsgi file as the source. I've tried to add logging to my wsgi file, but I can't find any log created for it. Is there any recommended way to debug this error? I am on the point of tearing my hair out. My WSGI file: import os import sys from django.core.handlers.wsgi import WSGIHandler import logging logger = logging.getLogger(__name__) os.environ['DJANGO_SETTINGS_MODULE'] = 'settings' os.environ['CELERY_LOADER'] = 'django' virtenv = os.path.expanduser("~/webapps/django/oneclickcosvirt/") activate_this = virtenv + "bin/activate_this.py" execfile(activate_this, dict(__file__=activate_this)) # if 'VIRTUAL_ENV' not in os.environ: # os.environ['VIRTUAL_ENV'] = virtenv sys.path.append(os.path.dirname(virtenv+'oneclickcos/')) logger.debug('About to run WSGIHandler') try: application = WSGIHandler() except (Exception,), e: logger.debug('Exception starting wsgihandler: %s' % e) raise e

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• How do rsync from within a python script?

  - by Viswa

  I plan to move file from one system to another system. For this, I am using rsync command in linux terminal. It works fine. But I need to implement this command to python. I am very new in python, so I don't know the way of defining the rsync command. So please tell the steps to define it. This is my rsync command: rsync -avrz /opt/data/filename root@ip:/opt/data/file I need to implement this command in a python script.

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• Linux Mint: How do I autorun rdp script?

  - by Rommel

  HI to all my name is Rommel... I'm new to Linux system coz im more into windows, but now i wanna try Linux os. I have this Linux Mint and i installed it on to one of my desktop PC, i have downloaded and installed freerdp-x11 for me to connect into my windows terminal server...The thing that I really need help is, i want the terminal command line to connect automatically to the windows terminal server so that every time i boot my Linux Mint pc i wouldn't have to keep typing "xfreerdp 000.000.0.000" on the terminal command line...Is there a script for it..???? PLease guys i really need your help on this... You can email me at this address: [email protected] or [email protected] Thanks in advance.

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• Why won't cron run my sh script?

  - by Dmitry Narkevich

  Used gnome-schedule to create a script to set my headset as the fallback audio device because it keeps unsetting it when the headset gets disconnected or pc goes into sleep mode. Anyway, crontab is this: SHELL=/bin/sh PATH=/bin:/sbin:/usr/bin:/usr/sbin:/home/dmitry/bin * * * * * headsetfix /home/dmitry/bin/headsetfix is #!/bin/sh pacmd set-default-sink alsa_output.usb-Logitech_Inc_Logitech_USB_Headset_H540_00000000-00-H540.analog-stereo pacmd set-default-source alsa_input.usb-Logitech_Inc_Logitech_USB_Headset_H540_00000000-00-H540.analog-stereo It runs fine from the terminal. I've made sure it's chmodded to be executable, and "which headsetfix", run from cron, outputs "/home/dmitry/bin/headsetfix" so not sure what the problem is.

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• Script to set NO_HEARTBEAT Flag

  - by Koppar

  The new plugin provides some flags to help debug the browser side VM. Below are the flags: JPI_PLUGIN2_DEBUG=1JPI_PLUGIN2_VERBOSE=1 The above 2 provide tracing information JPI_PLUGIN2_NO_HEARTBEAT = 1 This disables sending of  heartbeat messages between browser side VM and the client JVM instance(s). This lets the client JVM stay independent of browser side VM. These are to be set as system environment variables. Many a times we are required to set them using scripts. Here is a small script to achieve the same: -----------set_jpi_flags.vbs------------------------------------------ Set WSHShell = WScript.CreateObject("WScript.Shell")Set WshEnv = WshShell.Environment("USER")WshEnv("JPI_PLUGIN2_NO_HEARTBEAT") = "1"WshEnv("JPI_PLUGIN2_DEBUG") = "1"WshEnv("JPI_PLUGIN2_VERBOSE") = "1"WScript.Echo WshEnv("JPI_PLUGIN2_NO_HEARTBEAT")   ---- displays the value of the NO_HEARTBEAT var ---------------------------------------------------------------------------

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• Right-to-left script fails with Flash Player

  - by maria

  I am continuing an abandoned thread arabic reading error, since it was not solved. I'm using Ubuntu 10.04, Firefox 3.6.14. I've checked for Flash Player, I have the recent version installed. In the Flash Player window arabic script appears in wrong direction. The letters are displayed from left to right and not, as it should be, from right to left. For exemple http://www.fpnp.net/. The problematic place is the black bar in Flash window with a text below the image on the right. Here the letters are displayed in wrong direction and, by consequence, are not joined. You can see (I hope) the difference between that black bar and the rest of the text. Hope it will understandable for not Arabic-speaking people. Thanks

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• ~/.bashrc return can only 'return' from a function or sourced script

  - by Timothy

  I am trying to setup a OpenStack box to have a look at OpenStack Object Storage (Swift). Looking through the web I found this link; http://swift.openstack.org/development_saio.html#loopback-section I followed the instructions line by line but stuck on step 7 in the "Getting the code and setting up test environment" section. When I execute ~/.bashrc I get; line 6: return: can only 'return' from a function or sourced script. Below is the Line 6 extract from ~/.bashrc. My first reaction is to comment this line out, but I dont know what it does. Can anyone help? #If not running interactively, dont't do anything [ -z "$PS1" ] && return I'm running Ubuntu 12.04 as a VM on Hyper-v if knowing that is useful.

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• Script to only execute during first install of a package

  - by Jeroen

  I recently started packaging up some of my software and publishing it on Launchpad. The installation and removal works fine, but upgrading the package form one version to the next version is problematic. The problem is that there are some scripts that only need to run during the first installation of the package. These scripts populate the DB, create a user, etc. They are currently called in the package.postinst configure) section. However this results in them being called during an upgrade as well as shown in the diagram. Is there a way to include a maintainer script in a .deb package that only executes during the first installation of the package and not during an upgrade? Or what would be an elegant way to include some initial setup scripts in a .deb package?

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• Script to email files content

  - by Tarun

  I have created a shell script that takes backups everyday and emails its execution as successfull or unsuccessfull. Now I want that it send the contents of log file it creates with the mail as well. I have seen how to send file as attachement but I want to send the contents of the file as email message and not the file. Please Help. Its code is like #Email Settings Message_Success="Database Backup generated successfully" Message_Failure="Problem occured while generating Database Backup please verify" Subject="Database Backup Status Mail" Recipients="[email protected]" #Verify Backup Created if [ -f "$Path_Mysql_Dump" ]; then echo "Database Backup Created" >> $Path_Log_File echo "$Message_Success" | mail -s "$Subject" "$Recipients" else echo "Database Backup not created please verify the process will terminate" >> $Path_Log_File echo "$Message_Failure" | mail -s "$Subject" "$Recipients" exit -1 fi

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• Idoc Script Plug-in for Notepad++

  - by Kyle Hatlestad

  For those of you that caught it in an earlier post, Arnoud Koot wrote a great Idoc Script plug-in for Notepad++.  Well, he's back at it and has written an update for 11g! Arnoud made his announcement a few days ago on the WebCenter Content forum. And it looks like Jonathan Hult caught it as well and posted to his blog. A great addition to his plug-in is context sensitive help.  Now you can look up the variables and functions without having to switch to the formal Oracle documentation. He's even provided a tool to update the help automatically based on the Oracle documentation.  A couple of things to look for that I had missed the instructions was the note about updating the LanguageHelp.ini with your own path to the iDoc11g.chm file as well as the <ctrl><space> keystroke for the auto-complete. Great work Arnoud!

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• Adding new events to be handled by script part without recompilation of c++ source code

  - by paul424

  As in title I want to write an Event system with handling methods written in external script language, that is Angelscript. The AS methods would have acess to game's world modifing API ( which has to be regsitered for Angelscript Machine as the game starts) . I have come to this problem : if we use the Angelsript for rapid prototyping of the game's world behavior , we would like to be able to define new Event Types, without recompiling the main binary. Is that ever possible , don't stick to Angelscript, I think about any possible scripting language. The main thought is this : If there's some really new Event possible to be constructed , we must monitor some information coming from the binary, for example some variable value changing and the Events are just triggered on some conditions on those changes , wer might be monitoring the Creatures HP, by having a function call on each change, there we could define new Events such as Creature hurt, creature killed, creature healed , creature killed and tormented to pieces ( like geting HP very much below 0 ) . Are there any other ideas of constructing new Events at the scripting side ?

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• subprocess installed post-installation script returned error exit code 1

  - by Laura quintero

  I had installed snort on ubuntu 11.04 and uninstall it because I had problems, to reinstall it leaves a problem: Reading package lists ... done Building dependency tree Reading state information ... done Calculating upgrade ... ready 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. 0 B will be used for additional disk space after this operation. Do you want to continue [S / n]? s Configuring snort (2.8.5.2-9.1) ... * Stopping Network Intrusion Detection System snort * - No running snort instance found * Starting Network Intrusion Detection System snort [fail] invoke-rc.d: initscript snort, action "start" failed. dpkg: error processing snort (- configure): subprocess installed post-installation script returned error exit code 1 Errors were encountered while processing: snort E: Sub-process / usr / bin / dpkg Returned an error code (1) any solution? Commands allready used apt-get clean apt-get remove snort sudo apt-get dist-upgrade dpkg - remove - force-remove-reinstreq snort and nothing.

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• Simultaneously execute two queries on a shell script

  - by Alex

  I have a shell script in which I have to execute two queries (on different databases), spool their results to text files and finally call a c++ program that processes the information on those text files. Something like this: sqlplus user1/pw1@database1 @query1.sql sqlplus user2/pw2@database2 @query2.sql ./process_db_output Both queries take some time to execute. One of them can take up to 10 minutes, while the other one is usually faster. What I want to do is execute them simultaneously and when both are done, call the processing utility. Any suggestion on how to do so?

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• Software, script or a tool to automate managing which tests to run

  - by laggingreflex

  I have a batch file that lists all the test files I have and asks me which test I want to perform, like Test. [U]nit, [I]ntegration : i (user input) Integration. [A]ll, [2][U]serInteraction, [3][R]esultGeneration : u 2 User Interaction. Running "mocha integration\2userint.js" ... So essentially I have configured a batch "option" for each test file I have, which I can choose to run individually or all together. But adding and removing tests is a pain. I have to update the batch file everytime a new file is added or changed. Is there a software, script or a tool, that does this automatically, or makes it easier for me to do so? I basically need it to be aware of and ask me which file(s) I want to test. A GUI with checkboxes would be ultimate! but I'll take anything. I'm working in node.js

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• Languages with similar features to JavaFX Script

  - by bunglestink

  I just completed a small project in JavaFX, only finding that it has been declared dead by Oracle. JavaFX Script actually seemed to be a pretty interesting language with some neat features for its domain, particularly with bind for data binding and on replace for triggered events. These features actually make the language very useful for small, quick, RIA type apps, which leads to my question: Are there any mainstream languages with features similar to bind and on replace? After working with JavaFX, I got some ideas for some small personal (academic) projects that could take advantage of these features, but I would prefer to not start anything new in a language considered extinct by its owners.

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• How to script a reinstall (apt repo's and installed packages)

  - by Kurtosis

  I need to wipe my hard drive and reinstall Ubuntu. /home is on a separate partition, so I can back that up to a backup drive, then copy it back to the wiped drive, install ubuntu, and point it at the existing /home, no problem. However, I also want to script a reinstall of all my apt repo's and the packages I currently have installed, so I don't have to waste hours doing that manually. Anyone know a good way to do this? PS - At least, I'm pretty sure I have to wipe the drive. Need to install Windows 7, and only have an HP system restore disk that formats the whole drive, and not a legit Windows 7 install disk that lets me install on a single partition. If somebody know a way to trick the system restore disk to install only to a single partition, I'd love to hear it.

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