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How do I generate a random int number?
...d keep the Random instance and reuse it. If you create new instances too close in time, they will produce the same series of random numbers as the random generator is seeded from the system clock.
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How to analyze a java thread dump?
...pendent. It's the NID in jstack thread dumps. On Windows, it's simply the OS-level thread ID within a process. On Linux and Solaris, it's the PID of the thread (which in turn is a light-weight process). On Mac OS X, it is said to be the native pthread_t value.
Go to this link: Java-level thread ...
Sending POST data in Android
... params[0]; // URL to call
String data = params[1]; //data to post
OutputStream out = null;
try {
URL url = new URL(urlString);
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
out = new B...
npm failed to install time with make not found error
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Which OS are you using?
If it's Ubuntu you'll need to install the build-essential package:
$ sudo apt-get install build-essential
Then try to install the package again.
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What does it mean to inflate a view from an xml file?
I am new to android development and keep coming across references to Inflating views from a layout xml file. I googled and searched the development guide but still wasn't able to pick up a sense for what it means. If someone could provide a very simple example, it'd be much appreciated.
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Finding local IP addresses using Python's stdlib
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import socket
socket.gethostbyname(socket.gethostname())
This won't work always (returns 127.0.0.1 on machines having the hostname in /etc/hosts as 127.0.0.1), a paliative would be what gimel shows, use socket.getfqdn() instead. Of course your mach...
How can I copy the output of a command directly into my clipboard?
...oing it like Ctrl+T on some systems, but this is just for illustration purposes):
Terminal 1:
pwd | c
Terminal 2:
cd `v`
Notice the ` ` around v. This executes v as a command first and then substitutes it in-place for cd to use.
Only copy the content to the X clipboard
cat file | xclip
If y...
Post-install script with Python setuptools
Is it possible to specify a post-install Python script file as part of the setuptools setup.py file so that a user can run the command:
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How to output only captured groups with sed?
...z" | sed 's/^foo\(.*\)baz$/\1/'
will output "bar". If you use -r (-E for OS X) for extended regex, you don't need to escape the parentheses:
echo "foobarbaz" | sed -r 's/^foo(.*)baz$/\1/'
There can be up to 9 capture groups and their back references. The back references are numbered in the orde...
What does the '.' (dot or period) in a Go import statement do?
In the Go tutorial, and most of the Go code I've looked at, packages are imported like this:
3 Answers
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