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How to convert list to string [duplicate]
...the list to string can you this method: list1 = [1, 2, 3] str1 = ''.join('hello world' + str(e) + 'hello world' for e in list1) Output =========== hello world 1 hello world hello world 2 hello world hello world 3 hello world
– Pankaj Pande
May 16 '19 at 5:19
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Checking whether a string starts with XXXX
I would like to know how to check whether a string starts with "hello" in Python.
4 Answers
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NSInvocation for Dummies?
...
Here's a simple example of NSInvocation in action:
- (void)hello:(NSString *)hello world:(NSString *)world
{
NSLog(@"%@ %@!", hello, world);
NSMethodSignature *signature = [self methodSignatureForSelector:_cmd];
NSInvocation *invocation = [NSInvocation invocationWi...
How to assert output with nosetest/unittest in python?
...the `with` block
output = out.getvalue().strip()
self.assertEqual(output, 'hello world!')
Furthermore, since the original output state is restored upon exiting the with block, we can set up a second capture block in the same function as the first one, which isn't possible using setup and teardown ...
Convert camelCaseText to Sentence Case Text
How can I convert a string either like 'helloThere' or 'HelloThere' to 'Hello There' in JavaScript?
20 Answers
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Command to escape a string in bash
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In Bash:
printf "%q" "hello\world" | someprog
for example:
printf "%q" "hello\world"
hello\\world
This could be used through variables too:
printf -v var "%q\n" "hello\world"
echo "$var"
hello\\world
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Why is the shovel operator (
...to b. Here we also mutate a when we may not want to.
2.3.1 :001 > a = "hello"
=> "hello"
2.3.1 :002 > b = a
=> "hello"
2.3.1 :003 > b << " world"
=> "hello world"
2.3.1 :004 > a
=> "hello world"
Because += makes a new copy, it also leaves any variables that are p...
bash assign default value
I thought I could use this feature to write ${LONG_VARIABLE_NAME:=hello} instead of the longer LONG_VARIABLE_NAME=${LONG_VARIABLE_NAME:-hello} , but now bash also tries to execute 'hello' and that gives a command not found. Any way to avoid that? Or will I have to stick to the latter? Can someone...
What is the 'override' keyword in C++ used for? [duplicate]
... parent classes.
In detail, when you have an object foo that has a void hello() function:
class foo {
virtual void hello(); // Code : printf("Hello!");
}
A child of foo, will also have a hello() function:
class bar : foo {
// no functions in here but yet, you can call
// bar.hello...
How can I count occurrences with groupBy?
... List<String> list = new ArrayList<>();
list.add("Hello");
list.add("Hello");
list.add("World");
Map<String, Long> counted = list.stream()
.collect(Collectors.groupingBy(Function.identity(), Collectors.counting()));
System....