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How can strings be concatenated?
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The easiest way would be
Section = 'Sec_' + Section
But for efficiency, see: https://waymoot.org/home/python_string/
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What is the meaning of the /dist directory in open source projects?
Since I first saw a dist/ directory in many open source projects, usually on GitHub, I've been wondering what it means.
4...
How do I create a Java string from the contents of a file?
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Read all text from a file
Java 11 added the readString() method to read small files as a String, preserving line terminators:
String content = Files.readString(path, StandardCharsets.US_ASCII);
For versions between Java 7 and 11,...
Creating a daemon in Linux
...where it was started + a newline.
Daemons work in the background and (usually...) don't belong to a TTY that's why you can't use stdout/stderr in the way you probably want.
Usually a syslog daemon (syslogd) is used for logging messages to files (debug, error,...).
Besides that, there are a few re...
Can gcc output C code after preprocessing?
...tenate lines, choke on special characters, etc.) Asuming you have gcc installed, the command line is:
gcc -E -x c -P -C -traditional-cpp code_before.cpp > code_after.cpp
(Doesn't have to be 'cpp'.) There's an excellent description of this usage at http://www.cs.tut.fi/~jkorpela/html/cpre.htm...
Trim spaces from end of a NSString
...substringWithRange:NSMakeRange(location, i - location)];
}
So now just call it. Supposing you have a string that has spaces on the front and spaces on the end and you just want to remove the spaces on the end, you can call it like this:
NSString *oneTwoThree = @" TestString ";
NSString *resul...
How to find keys of a hash?
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There is function in modern JavaScript (ECMAScript 5) called Object.keys performing this operation:
var obj = { "a" : 1, "b" : 2, "c" : 3};
alert(Object.keys(obj)); // will output ["a", "b", "c"]
Compatibility details can be found here.
On the Mozilla site there is also a sn...
PHP Fatal error: Cannot redeclare class
...ious repetition like this (even in quite a complex situation). The include_once tip helps to clarify an obscure feature of PHP.
– DavidHyogo
Mar 20 '13 at 2:12
2
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What does |= (ior) do in Python?
...s1 |= s2 # 2
>>> s1.__ior__(s2) # 3
where the final value of s1 is equivalent either by:
an assigned OR operation
an in-place OR operation
an in-place OR operation via special method++
Example
Here we a...
Make a Bash alias that takes a parameter?
...reate a function.
alias does not accept parameters but a function can be called just like an alias. For example:
myfunction() {
#do things with parameters like $1 such as
mv "$1" "$1.bak"
cp "$2" "$1"
}
myfunction old.conf new.conf #calls `myfunction`
By the way, Bash functions def...