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  • Temporary PYTHONPATH in Windows

    - by Santa
    How do I set, temporarily, the PYTHONPATH environment variable just before executing a Python script? In *nix, I can do this: $ PYTHONPATH='.' python scripts/doit.py In Windows, this syntax does not work, of course. What is the equivalent, though?

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  • How to camelcase decibels?

    - by Roddy
    The standard abbreviations for decibels is "dB" (note the case!) So, if I have a variable, holding (for instance) a maximum dB value, how best to name it? maxDbValue maxdBValue maxDecibelValue something else? Each has disdvantages - #1 swaps the case of the unit, #2 doesn't clearly split max from dB, and #3 is verbose... I think #1 feels best, but...???

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  • Mimic C preprocessor with Python/Ruby?

    - by prosseek
    I need to mimic the preprocessor feature of C with Python. If I want to run the debug release, I use as follows with C #ifdef DEBUG printf(...) #endif I just use -DDEBUG or similar to trigger it on or off. What method can I use for Python/Ruby? I mean, what should I do to control the behavior of python/ruby scripts in such a way that I can change a variable that affects all the script files in a project?

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  • UTF-8 - Oracle issue

    - by goe
    I set my NLS_LANG variable as 'AMERICAN_AMERICA.AL32UTF8' in the perl file that connects to oracle and tries to insert the data. However when I insert a record with one value having this 'ñ' character the sql fails. But if I use 'Ñ' it inserts just fine. What am I doing wrong here?

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  • rails paperclip multi upload

    - by mattherick
    hello! has somebody from you followed this tutorial? link text I really don´t now why, but I got following fault, when I went through the tutorial word by word: @album[photo_attributes]‘ is not allowed as an instance variable name somebody an idea why?

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  • Source operator doesn't work in if construction in bash

    - by Igor
    Hello, I'd like to include a config file in my bash script with 2 conditions: 1) the config file name is constructed on-the-fly and stored in variable, and 2) in case if config file doesn't exist, the script should fail: config.cfg: CONFIGURED=yes test.sh: #!/bin/sh $CFG=config.cfg echo Source command doesn't work here: [ -f $CFG ] && ( source $CFG ) || (echo $CFG doesnt exist; exit 127) echo $CONFIGURED echo ... but works here: source $CFG echo $CONFIGURED What's wrong in [...] statement?

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  • Refactoring many nested ifs or chained if statements

    - by Icarus
    Hi, I have an object with large number of similar fields (like more than 10 of them) and I have to assign them values from an array of variable length. The solution would be either a huge nested bunch of ifs based on checking length of array each time and assigning each field OR a chain of ifs checking on whether the length is out of bounds and assigning each time after that check. Both seem to be repetitive. Is there a better solution ?

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  • tomcat 'document base does not exist' error (but it does)

    - by SpliFF
    Gentoo / Tomcat 6 INFO: Starting Servlet Engine: Apache Tomcat/6.0.20 Sep 8, 2009 10:34:51 AM org.apache.catalina.core.StandardContext resourcesStart SEVERE: Error starting static Resources java.lang.IllegalArgumentException: Document base /www/rivervalley/site does not exist or is not a readable directory at org.apache.naming.resources.FileDirContext.setDocBase(Unknown Source) at org.apache.catalina.core.StandardContext.resourcesStart(Unknown Source) at org.apache.catalina.core.StandardContext.start(Unknown Source) at org.apache.catalina.core.ContainerBase.start(Unknown Source) at org.apache.catalina.core.StandardHost.start(Unknown Source) at org.apache.catalina.core.ContainerBase.start(Unknown Source) oh really? then how come: ls -la /www/rivervalley/site/ drwxr-xr-x 12 tomcat tomcat 4096 Sep 8 09:56 . drwxr-xr-x 16 tomcat tomcat 4096 Jun 29 16:22 .. -rwxr--r-- 1 tomcat tomcat 520 Jul 3 02:15 Application.cfm drwxr-xr-x 2 tomcat tomcat 4096 Sep 8 09:56 WEB-INF and ... tomcat 18916 1.0 5.5 1159188 167892 ? Ssl 10:37 0:11 /opt/sun-jdk-1.5.0.18/bin/java -Djava.util.loggin Hell, ANY account can read that directory so the claim is utter nonsense. What else can cause this? Here's my relevant server.xml section: <Host name="rivervalley" appBase="webapps" unpackWARs="false" autoDeploy="false" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="/www/rivervalley/site" /> </Host>

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  • Backup script to FTP with timed subfolders

    - by Frederik Nielsen
    I want to make a backup script, that makes a .tar.gz of a folder I define, say fx /root/tekkit/world This .tar.gz file should then be uploaded to a FTP server, named by the time it was uploaded, for example: 07-10-2012-13-00.tar.gz How should such backup script be written? I already figured out the .tar.gz part - just need the naming and the uploading to FTP. I know that FTP is not the most secure way to do it, but as it is non-sensitive data, and FTP is the only option I have, it will do. Edit: I ended up with this script: #!/bin/bash # have some path predefined for backup unless one is provided as first argument BACKUP_DIR="/root/tekkit/world/" TMP_DIR="/tmp/tekkitbackup/" FINISH_DIR="/tmp/tekkitfinished/" # construct name for our archive TIME=$(date +%d-%m-%Y-%H-%M) if [ $1 ]; then BACKUP_DIR="$1" fi echo "Backing up dir ... $BACKUP_DIR" mkdir $TMP_DIR cp -R $BACKUP_DIR $TMP_DIR cd $FINISH_DIR tar czvfp tekkit-$TIME.tar.gz -C $TMP_DIR . # create upload script for lftp cat <<EOF> lftp.upload.script open server user user password lcd $FINISH_DIR mput tekkit-$TIME.tar.gz exit EOF # start backup using lftp and script we created; if all went well print simple message and clean up lftp -f lftp.upload.script && ( echo Upload successfull ; rm lftp.upload.script )

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  • Pros and cons of escaping strategies in symfony

    - by zergu
    I am still not sure in that matter. While turned on we're quite safe but some other problems appear (with passing template variables or counting characters). On the other hand we have magic turned off, everything is clear, but we have to manually escape every variable (that come from untrusted source) in templates. By the way, non-magic solution is used in Ruby-on-Rails. So the question is: when starting a new project in symfony do you disable escaping_strategy and why?

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  • How do I get rid of LD_LIBRARY_PATH at run-time?

    - by Kjir
    I am building a C++ application that uses Intel's IPP library. This library is installed by default in /opt and requires you to set LD_LIBRARY_PATH both for compiling and for running your software (if you choose the shared library linking, which I did). I already modified my configure.ac/Makefile.am so that I do not need to set that variable when compiling, but I still can't find the shared library at run-time; how do I do that? I'm compiling with the -Wl, -R/path/to/lib flag using g++

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  • WPF Application Maximize Problem

    - by user279244
    How to set the Height and width of a WPF application on maximise? Problem I face is because of variable height of the windows taskbar in different computers Presently, I am doing it like this. Please suggest any better technique if (this.WindowState == WindowState.Maximized) { this.Height = primaryScreenHeight - 10 - System.Windows.Forms.SystemInformation.SizingBorderWidth; this.Width = primaryScreenWidth + 2 * System.Windows.Forms.SystemInformation.FrameBorderSize.Width; }

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  • Synthesized property of a protocol not seeing superclass' ivar

    - by hyn
    I have a situation where my subclass is not seeing the superclass' instance variable x. The ivar is obviously @protected by default, so why do I get a compiler error "x undeclared"? - (CGSize)hitSize { // Compiler error return size; } EDIT: hitSize is a property of a protocol my subclass is conforming to. The problem was that I had hitSize @synthesized, which was the culprit. The question then is why can't the synthesized getter see the ivar?

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  • Auto-Completion in Unix VI editor

    - by IllustratedInsomnia
    Hey guys, after using graphical IDE's like Visual Studio, I'm used to pressing CTRL+Space to auto-complete a variable or function name. Now, I know such a thing isn't completely possible in VI, but I heard there was a list of commands that could be mapped that allowed automatic completion of variables and functions in the current file opened. Does anyone know what this sequence is? Thanks in advance.

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  • Negative numbers, arrays javascript!

    - by zizzamia
    I was implementing a routing algorithm in javascript, but when I assign a negative one variable in the array gives me this error: invalid array length. var node = new Array() node[0] = new Array(6,7) node[1] = new Array(5,-4,8) node[2] = new Array(-2) //Here, invalid array length I do not know how to resolve this error.

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  • C: Random Number Generation - What (If Anything) Is Wrong With This

    - by raoulcousins
    For a simple simulation in C, I need to generate exponential random variables. I remember reading somewhere (but I can't find it now, and I don't remember why) that using the rand() function to generate random integers in a fixed range would generate non-uniformly distributed integers. Because of this, I'm wondering if this code might have a similar problem: //generate u ~ U[0,1] u = ( (double)rand() / ((double)(RAND_MAX)); //inverse of exponential CDF to get exponential random variable expon = -log(1-u) * mean; Thank you!

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  • Send data from Service to Widget on Android.

    - by Jose Vega
    I am writing a widget on Android 1.6 that shows the minutes that a person has used on the current month. The way I have it setup is by having a service that listens to the state of the phone and when the phone is picked up, it starts the timer and when the person hangs up, ends a timer. I would like to send this variable(long duration) over to my appWidgetProvider so I could update the edit text on it.

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  • how I can overcome this error C2679: binary '>>' : no operator found which takes a right-hand oper

    - by hussein abdullah
    #include <iostream> using std::cout; using std::cin; using std::endl; #include <cstring> void initialize(char[],int*); void input(const char[] ,int&); void print ( const char*,const int); void growOlder (const char [], int* ); bool comparePeople(const char* ,const int*,const char*,const int*); int main(){ char name1[25]; char name2[25]; int age1; int age2; initialize (name1,&age1); initialize (name2,&age2); print(name1,age1); print(name2,age2); input(name1,age1); input(name2,age2); print(name1,age1); print(name2,age2); growOlder(name2,&age2); if(comparePeople(name1,&age1,name2,&age2)) cout<<"Both People have the same name and age "<<endl; return 0; } void input(const char name[],int &age) { cout<<"Enter a name :"; cin>>name ; cout<<"Enter an age:"; cin>>age; cout<<endl; } void initialize ( char name[],int *age) { name[0]='\0'; *age=0; } void print ( const char name[],const int age ) { cout<<"The Value stored in variable name is :" <<name<<endl <<"The Value stored in variable age is :" <<age<<endl<<endl; } void growOlder(const char name[],int *age) { cout<< name <<" has grown one year older\n\n"; *age++; } bool comparePeople (const char *name1,const int *age1, const char *name2,const int *age2) { return(*age1==*age2 && !strcmp(name1,name2)); }

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  • How to change the value of value in BASH ??

    - by debugger
    Hello All, Let's say i have the Following, Vegetable=Potato ( Kind of vegetable that i have ) Potato=3 ( quantity available ) If i wanna know how many vegetables i have (from a script where i have access only to variable Vegetable), i do the following: Quantity=${!Vegetable} But let's say i take one Potato then i want to update the quantity, i should be able to do the following: ${Vegetable}=$(expr ${!Vegetable} - 1) It does not work !! Any clues to realize this Thanks

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  • use pin.title in other class

    - by Marco
    Hello i have implemented the following code: - (void) mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)annView calloutAccessoryControlTapped:(UIControl *)control { name = annView.annotation.title; NSLog(name, [annView description]); } and how can I use the variable name in another class? can you please help me, i am new in iphone developing!

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