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How to do a non-greedy match in grep?
...this might work for the viewers in 2020.
So suppose you have a line like "Hello my name is Jello".
Now you want to find the words that start with 'H' and end with 'o', with any number of characters in between. And we don't want lines we just want words. So for that we can use the expression:
grep ...
Simple way to repeat a String in java
...des a tidy way to do this in conjunction with Collections.nCopies:
// say hello 100 times
System.out.println(String.join("", Collections.nCopies(100, "hello")));
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File I/O in Every Programming Language [closed]
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Python 3
with open('fileio.txt', 'w') as f:
f.write('hello')
with open('fileio.txt', 'a') as f:
f.write('\nworld')
with open('fileio.txt') as f:
s = f.readlines()[1]
print(s)
Clarifications
readlines() returns a list of all the lines in the file.
Therefore, the invoka...
How do I programmatically force an onchange event on an input?
... calling should onchange() work:
<input id="test1" name="test1" value="Hello" onchange="alert(this.value);"/>
<input type="button" onclick="document.getElementById('test1').onchange();" value="Say Hello"/>
Edit: The reason ele.onchange() didn't work was because I hadn't actually decla...
Fastest method to replace all instances of a character in a string [duplicate]
...eplaceAll("", "xyz");
// xyzxxyz
"aA".replaceAll("a", "b", true);
// bb
"Hello???".replaceAll("?", "!");
// Hello!!!
Let me know if you can break it, or you have something better, but make sure it can pass these 4 tests.
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Can I multiply strings in Java to repeat sequences? [duplicate]
...for (int n = 0; n < 10; n++) {
System.out.println(repeat(n) + " Hello");
}
for (int n = 0; n < 10; n++) {
System.out.println(repeat(n, ":-) ") + " Hello");
}
}
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JavaScript naming conventions [closed]
... sure whether this is a constructor (non-static) or not
myLightbox.show('hello')
})
I'm thinking about trying a convention where static modules use 'the' to indicate their preexistence. Has anyone seen a better way than this? Would look like this:
define(['theLightbox'],function(theLightbox) {
...
Removing double quotes from variables in batch file creates problems with CMD environment
...word "World" (not case sensitive) with BobB do the following:
set widget="Hello World!"
set widget=%widget:world=BobB%
set widget
Output:
widget="Hello BobB!"
As far as your initial question goes (save the following code to a batch file .cmd or .bat and run):
@ECHO OFF
ECHO %0
SET BathFileAnd...
jQuery .ready in a dynamically inserted iframe
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$('iframe').ready(function() {
$('body', $('iframe').contents()).html('Hello World!');
});
REVISION:!
Actually the above code sometimes looks like it works in Firefox, never looks like it works in Opera.
Instead I implemented a polling solution for my purposes. Simplified down it looks like t...
std::cin input with spaces?
The user wants to enter "Hello World". But cin fails at the space between the two words. How can I make cin take in the whole of Hello World ?
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