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How does a Linux/Unix Bash script know its own PID?
...SHPID | cat -
11656 31528
$ echo $$ $BASHPID
11656 11656
$ echo $$ | while read line; do echo $line $$ $BASHPID; done
11656 11656 31497
$ while read line; do echo $line $$ $BASHPID; done <<< $$
11656 11656 11656
sh...
Change R default library path using .libPaths in Rprofile.site fails to work
... if you want to add a library why not append the new library (which must already exist in your filesystem) to the existing library path?
.libPaths( c( .libPaths(), "~/userLibrary") )
Or (and this will make the userLibrary the first place to put new packages):
.libPaths( c( "~/userLibrary" , .li...
How to parse a CSV file using PHP [duplicate]
... I ended up encoding before saving to CSV and decoding while reading - php.net/rawurlencode - that ensures no line-breaks, right? - or does it loose them entirely (can there be line breaks in URL encoding?)
– Julix
May 15 '17 at 4:24
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REST vs JSON-RPC? [closed]
...tead, clients depend on message formats. This creates possibility to use already implemented libraries for particular media formats (e.g. Atom, HTML, Collection+JSON, HAL etc...)
It's possible to easily change URIs without breaking clients as far as they only depend on registered (or domain specifi...
Nodejs send file in response
...m that will send myfile.mp3 by streaming it from disk (that is, it doesn't read the whole file into memory before sending the file). The server listens on port 2000.
[Update] As mentioned by @Aftershock in the comments, util.pump is gone and was replaced with a method on the Stream prototype called...
Why compile Python code?
...
The .pyc file is Python that has already been compiled to byte-code. Python automatically runs a .pyc file if it finds one with the same name as a .py file you invoke.
"An Introduction to Python" says this about compiled Python files:
A program doesn't r...
NSString with \n or line break
...
I found that when I was reading strings in from a .plist file, occurrences of "\n" were parsed as "\\n". The solution for me was to replace occurrences of "\\n" with "\n". For example, given an instance of NSString named myString read in from my .pl...
What is lexical scope?
...ocal variables.
The lexical part means that you can derive the scope from reading the source code.
Lexical scope is also known as static scope.
Dynamic scope defines global variables that can be called or referenced from anywhere after being defined. Sometimes they are called global variables, e...
Why does Java allow us to compile a class with a name different than the file name?
...name does not have to be officially put on the door. Instead, the door can read "Utilities" or "Meeting room".
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Any way to make a WPF textblock selectable?
...
Use a TextBox with these settings instead to make it read only and to look like a TextBlock control.
<TextBox Background="Transparent"
BorderThickness="0"
Text="{Binding Text, Mode=OneWay}"
IsReadOnly="True"
TextWrapping="Wrap" />
...