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What does a b prefix before a python string mean?
In a python source code I stumbled upon I've seen a small b before a string like in:
2 Answers
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Selenium wait until document is ready
...imeout(10, TimeUnit.SECONDS);
The above code will wait up to 10 seconds for page loading. If the page loading exceeds the time it will throw the TimeoutException. You catch the exception and do your needs. I am not sure whether it quits the page loading after the exception thrown. i didn't try th...
What is the difference between the 'COPY' and 'ADD' commands in a Dockerfile?
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You should check the ADD and COPY documentation for a more detailed description of their behaviors, but in a nutshell, the major difference is that ADD can do more than COPY:
ADD allows <src> to be a URL
Referring to comments bellow, the ADD documentation states tha...
Git branching: master vs. origin/master vs. remotes/origin/master
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Take a clone of a remote repository and run git branch -a (to show all the branches git knows about). It will probably look something like this:
* master
remotes/origin/HEAD -> origin/master
remotes/origin/master
Here, master is a branch in the l...
Android and in TextView
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That works great. You can add that to xml or in java code. Work fine in java code, in xml I haven't tested to much, but it should do the job.
– Mikooos
Jul 4 '11 at 7:52
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knitr Markdown highlighting in Emacs?
Is there any modification of an existing tool or new tool that will syntax-highlight (colour) blocks of R code in a knitr markdown document when opened in Emacs?
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Java, List only subdirectories from a directory, not files
In Java, How do I list only subdirectories from a directory?
13 Answers
13
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Check existence of input argument in a Bash shell script
...ariable will tell you the number of input arguments the script was passed.
Or you can check if an argument is an empty string or not like:
if [ -z "$1" ]
then
echo "No argument supplied"
fi
The -z switch will test if the expansion of "$1" is a null string or not. If it is a null string then t...
Using global variables between files?
I'm bit confused about how the global variables work. I have a large project, with around 50 files, and I need to define global variables for all those files.
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How to get the root dir of the Symfony2 application?
What is the best way to get the root app directory from inside the controller? Is it possible to get it outside of the controller?
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