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xpath find if node exists
...using xpath in Java using count():
int numberofbodies = Integer.parseInt((String) xPath.evaluate("count(/html/body)", doc));
if( numberofbodies==0) {
// body node missing
}
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What's the best way to set a single pixel in an HTML5 canvas?
... RGB values straight into an ImageData block on the other hand requires no string handling or parsing.
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What is a classpath and how do I set it?
...to go. I generally make sure my CLASSPATH environment variable is an empty string where I develop, whenever possible, so that I avoid global classpath issues (some tools aren't happy when the global classpath is empty though - I know of two common, mega-thousand dollar licensed J2EE and Java servers...
Is it possible to modify variable in python that is in outer, but not global, scope?
... would mean grandparent <module> aka global
The second argument is a string or code object you want to execute in the given scope
You can also call it without arguments for interactive shell inside your program
The long answer
This is more complicated. Seapie works by editing the frames i...
Utilizing multi core for tar+gzip/bzip compression/decompression
...r
tar -P --transform='s@/my/path/@@g' -cf - {} +
--transform is a simple string replacement parameter. It will strip the path of the files from the archive so the tarball's root becomes the current directory when extracting. Note that you can't use -C option to change directory as you'll lose bene...
How to use multiple arguments for awk with a shebang (i.e. #!)?
...'s supposed to fail all the time. You could replace it with some gibberish string. Basically, I was looking for a false-condition in awk that would not adversely affect the shell script.
In the shell script, the arbitrary_long_name==0 defines a variable called arbitrary_long_name and sets it equal ...
Why is there a `null` value in JavaScript?
...ing to null can give you an error. Often in this case setting to the empty string tends to work.
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Having Django serve downloadable files
...ntended since apache module X-Sendfile cannot decode the smart_str encoded string. Thus for example "Örinää.mp3" file cannot be served. And if one omits the smart_str, the Django itself throws ascii encoding error because all headers are encoded to ascii format before sending. Only way that I kno...
Convert SVG to PNG in Python
...rt an svg to png , in Python? I am storing the svg in an instance of StringIO . Should I use the pyCairo library? How do I write that code?
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Remove menu and status bars in TinyMCE 4
...o customise what parts of the default menu bar are visible by specifying a string of enabled menus - e.g. menubar: 'file edit'
You can define your own menus like this:
menu : {
test: {title: 'Test Menu', items: 'newdocument'}
},
menubar: 'test'
...