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Replace one substring for another string in shell script
...e variable $HOME contains slashes but this didn't break anything.
Further reading: Advanced Bash-Scripting Guide.
If using sed is a must, be sure to escape every character.
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What are all the different ways to create an object in Java?
...w ObjectInputStream(anInputStream );
MyObject object = (MyObject) inStream.readObject();
You can read them from here.
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Get program execution time in the shell
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How is this used on a command like time -p i=x; while read line; do x=x; done < /path/to/file.txt? It immediatly returns 0.00 unless I don't put anything before the while loop.. what gives?
– natli
Dec 14 '12 at 21:45
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rsync error: failed to set times on “/foo/bar”: Operation not permitted
... I was using rsync -avc, and adding -O was not helping. I then read that -a was the equiv to -rlptgoD which includes -t which I guess is overriding -O. So for me the fix was to use -rlpgoDvc
– dlink
Sep 21 '16 at 20:17
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How to get Ruby / Homebrew / RVM to work on Yosemite?
...haven't made any changes to brew yet, here is what I recommend. Otherwise read further below.
cd /System/Library/Frameworks/Ruby.framework/Versions/
sudo ln -s Current 1.8
brew update
sudo unlink 1.8
Already made changes to brew files and stuck in a git mess?
I tried to edit /usr/local/Librar...
Compare floats in php
...less and they'd prefer 0.1 instead. And writing a number so that it can be read again in exactly the same way. As you see, it's not as clear-cut as you make it out to be. And for the record, you still want to compare floating-point numbers like I have shown because you can arrive at $a and $b via di...
is vs typeof
...j.GetType() == typeof(ClassA)) {}, is faster, for those that don't want to read the article.
(Be aware that they don't do the same thing)
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Checking if an Android application is running in the background
...n ancestor for your Activities if you'd like to, but if your activity is already extended from MapActivity/ListActivity etc. you still need to write the following by hand):
@Override
protected void onResume() {
super.onResume();
MyApplication.activityResumed();
}
@Override
protected void onPa...
Flatten an irregular list of lists
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Using generator functions can make your example a little easier to read and probably boost the performance.
Python 2
def flatten(l):
for el in l:
if isinstance(el, collections.Iterable) and not isinstance(el, basestring):
for sub in flatten(el):
yiel...
Android - Package Name convention
...rmal java package conventions plus here is an important snippet of text to read (this is important regarding the wide use of xml files while developing on android).
The reason for having it in reverse order is to do with the layout on the storage media. If you consider each period ('.') in the appl...