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Write lines of text to a file in R
...
fileConn<-file("output.txt")
writeLines(c("Hello","World"), fileConn)
close(fileConn)
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indexOf method in an object array?
...one line using the map function:
pos = myArray.map(function(e) { return e.hello; }).indexOf('stevie');
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How do I paste multi-line bash codes into terminal and run it all at once?
...ter, like in the following example:
If I had the following blob
function hello {
echo Hello!
}
hello
You can paste and verify in a terminal using bash by:
Starting with (
Pasting your text, and pressing Enter (to make it pretty)... or not
Ending with a ) and pressing Enter
Example:
ima...
How do I check if a string contains another string in Objective-C?
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NSString *string = @"hello bla bla";
if ([string rangeOfString:@"bla"].location == NSNotFound) {
NSLog(@"string does not contain bla");
} else {
NSLog(@"string contains bla!");
}
The key is noticing that rangeOfString: returns an NSRange st...
Difference between Mock / Stub / Spy in Spock test framework
...jects can be tested normally"() {
expect:
realSubscriber1.receive("Hello subscribers") == "ok"
realSubscriber1.receive("Anyone there?") == "uh-oh"
}
@FailsWith(TooFewInvocationsError)
def "Real objects cannot have interactions"() {
when:
publisher.send("Hello subscribers")...
Redirecting to URL in Flask
...om flask import Flask,redirect
app = Flask(__name__)
@app.route('/')
def hello():
return redirect("http://www.example.com", code=302)
if __name__ == '__main__':
# Bind to PORT if defined, otherwise default to 5000.
port = int(os.environ.get('PORT', 5000))
app.run(host='0.0.0.0', p...
Select by partial string from a pandas DataFrame
...ks like you'll soon be able to do the following:
df[df['A'].str.contains("hello")]
Update: vectorized string methods (i.e., Series.str) are available in pandas 0.8.1 and up.
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Remove multiple spaces and new lines inside of String
...
The simplest way would probably be
s = "Hello, my\n name is Michael."
s.split.join(' ') #=> "Hello, my name is Michael."
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Inserting a string into a list without getting split into characters
...
Another option is using the overloaded + operator:
>>> l = ['hello','world']
>>> l = ['foo'] + l
>>> l
['foo', 'hello', 'world']
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How can I remove the extension of a filename in a shell script?
...is gives the portion of the variable up to the first period .:
$ filename=hello.world
$ echo "$filename" | cut -f 1 -d '.'
hello
$ filename=hello.hello.hello
$ echo "$filename" | cut -f 1 -d '.'
hello
$ filename=hello
$ echo "$filename" | cut -f 1 -d '.'
hello
...