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Computer Science Education Recreation Software Development

How to extract elements that interest me in this list?

Luis Ledesma

Posted 10 years ago

Hi all I would like to help me to do the following, I have following list : prb = {{"https://www.youtube.com/watch?v=SGfM-JEEBvs"}, \ {"http://www.dma.fi.upm.es/docencia/segundociclo/geomfrac/proyectos/\ tutorial-mov-brow/Pagina%20Inicio.htm"}, \ {"http://tierrafertil.com.mx/otorgan-galardon-internacional-\ investigador-de-chapingo/"}, {"https://www.youtube.com/watch?v=KO3X7udtZKI"}, \ {"https://www.youtube.com/watch?v=2FhchwKHt00"}, \ {"https://www.youtube.com/watch?v=3lgh0RuJWnM"}, \ {"https://www.youtube.com/watch?v=Ct3dabOl9aA"}, \ {"https://www.youtube.com/watch?v=Hyc8XmRDwPY"}, \ {"http://community.wolfram.com/dashboard"}, \ {"http://blogsocl.com/segun-experto-asi-luce-el-cuerpo-\ cientificamente-perfecto-de-una-mujer-su-nombre-es-kelly-brook/#"}, , \ {"http://blog.linuxmint.com/"}, \ {"https://www.youtube.com/watch?v=5EpoIbj-i2o"}, \ {"https://www.youtube.com/watch?v=wZ969VcRTH0"}}; and I want to get in a single list all what start with "http://www.youtube something" Thanks in advance, I hope that someone can help me because the original list contains about 300 elements too which complicates the task.

Hi all I would like to help me to do the following, I have following list :

prb = {{"https://www.youtube.com/watch?v=SGfM-JEEBvs"}, \
{"http://www.dma.fi.upm.es/docencia/segundociclo/geomfrac/proyectos/\
tutorial-mov-brow/Pagina%20Inicio.htm"}, \
{"http://tierrafertil.com.mx/otorgan-galardon-internacional-\
investigador-de-chapingo/"},  {"https://www.youtube.com/watch?v=KO3X7udtZKI"}, \
    {"https://www.youtube.com/watch?v=2FhchwKHt00"}, \
    {"https://www.youtube.com/watch?v=3lgh0RuJWnM"}, \
    {"https://www.youtube.com/watch?v=Ct3dabOl9aA"}, \
    {"https://www.youtube.com/watch?v=Hyc8XmRDwPY"}, \
    {"http://community.wolfram.com/dashboard"}, \
    {"http://blogsocl.com/segun-experto-asi-luce-el-cuerpo-\
    cientificamente-perfecto-de-una-mujer-su-nombre-es-kelly-brook/#"}, , \
    {"http://blog.linuxmint.com/"}, \
    {"https://www.youtube.com/watch?v=5EpoIbj-i2o"}, \
    {"https://www.youtube.com/watch?v=wZ969VcRTH0"}};

and I want to get in a single list all what start with "http://www.youtube something"

Thanks in advance, I hope that someone can help me because the original list contains about 300 elements too which complicates the task.

POSTED BY: Luis Ledesma

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Luis Ledesma

Posted 10 years ago

After trying to make some arrangements in the list published without obtaining the desired success I note that I copying evil that piece of list, but to execute the instructions that you shared, in my original list I got what I wanted to, many thanks for your help I have no words to thank you, here I leave a picture so you can see our success, greetings !

POSTED BY: Luis Ledesma

Luis Ledesma

Posted 10 years ago

After trying to make some arrangements in the list published without obtaining the desired success I note that I copying evil that piece of list, but to execute the instructions that you shared, in my original list I got what I wanted to, many thanks for your help I have no words to thank you, here I leave a picture so you can see our success, greetings !

POSTED BY: Luis Ledesma

Luis Ledesma

Posted 10 years ago

Bill thank you very much for your help, but when I run those lines of code that your I've shared I get the following error that think you that this error is due? have any other way of doing it? Thank you for supporting me to resolve this, greetings Luis Ledesma