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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...st is defined as ArrayList<String> arraylist , is arraylist.removeAll(arraylist) equivalent to arraylist.clear() ?
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Count all occurrences of a string in lots of files with grep
...a bunch of log files. I need to find out how many times a string occurs in all files.
15 Answers
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Why should weights of Neural Networks be initialized to random numbers? [closed]
I am trying to build a neural network from scratch.
Across all AI literature there is a consensus that weights should be initialized to random numbers in order for the network to converge faster.
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What is “2's Complement”?
...lement.
To understand, you have to think of the numbers in binary.
It basically says,
for zero, use all 0's.
for positive integers, start counting up, with a maximum of 2(number of bits - 1)-1.
for negative integers, do exactly the same thing, but switch the role of 0's and 1's (so instead of start...
Turn off constraints temporarily (MS SQL)
I'm looking for a way to temporarily turn off all DB's constraints (eg table relationships).
5 Answers
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Finish all previous activities
...(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
This will clear all the activities on top of home.
Assuming you are finishing the login screen when the user logs in and home is created and afterwards all the screens from 1 to 5 on top of that one. The code i posted will return you to ho...
lose vim colorscheme in tmux mode
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Personally I had to use set -g default-terminal "screen-256color" to work rather than xterm on OS X, sshed into an Ubuntu box. I referred to this site: rhnh.net/2011/08/20/vim-and-tmux-on-osx
– waffl
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How to have multiple CSS transitions on an element?
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Transition properties are comma delimited in all browsers that support transitions:
.nav a {
transition: color .2s, text-shadow .2s;
}
ease is the default timing function, so you don't have to specify it. If you really want linear, you will need to specify it:
tra...
How to strip all whitespace from string
How do I strip all the spaces in a python string? For example, I want a string like strip my spaces to be turned into stripmyspaces , but I cannot seem to accomplish that with strip() :
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How can I exclude all “permission denied” messages from “find”?
I need to hide all permission denied messages from:
17 Answers
17
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