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What does asterisk * mean in Python? [duplicate]
...rd arguments, defaulting to a new
empty dictionary.
Also, see Function Calls.
Assuming that one knows what positional and keyword arguments are, here are some examples:
Example 1:
# Excess keyword argument (python 2) example:
def foo(a, b, c, **args):
print "a = %s" % (a,)
print "b = ...
Environment variable to control java.io.tmpdir?
...ws.
On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable.
On Linux and Solaris, the same get_temp_directory() functions return a static value of /tmp/.
I don't know if the actua...
How do you use the ? : (conditional) operator in JavaScript?
...
This is a one-line shorthand for an if-else statement. It's called the conditional operator.1
Here is an example of code that could be shortened with the conditional operator:
var userType;
if (userIsYoungerThan18) {
userType = "Minor";
} else {
userType = "Adult";
}
if (userIs...
Possible to change where Android Virtual Devices are saved?
...ommand file. At about the end of the command file, find a line similar to
call %java_exe% -Djava.ext.dirs=%java_ext_dirs% -Dcom.android.sdkmanager.toolsdir="%tools_dir%" -Dcom.android.sdkmanager.workdir="%work_dir%" -jar %jar_path% %*
and replace
call %java_exe%
with
call %java_exe% -Duser.ho...
Fastest way to copy file in node.js
...this adds error handling:
function copyFile(source, target, cb) {
var cbCalled = false;
var rd = fs.createReadStream(source);
rd.on("error", function(err) {
done(err);
});
var wr = fs.createWriteStream(target);
wr.on("error", function(err) {
done(err);
});
wr.on("close", fu...
Convert XML to JSON (and back) using Javascript
...representation, and XML is just used for XSLT.. the use of which is not my idea! :)
– Jason Suárez
Nov 20 '09 at 23:29
1
...
Is it possible to style a select box? [closed]
...re than one on the page. Now it's difficult to style because for some stupid reason the author thought it OK to use the same ID for all the elements rather than unique IDs or classes. Now I'm thinking of writing my own...
– Jonathan
Aug 15 '10 at 6:20
...
How to convert an int to string in C?
...rst you need to find out sufficient size. snprintf tells you length if you call it with NULL, 0 as first parameters:
snprintf( NULL, 0, "%d", x );
Allocate one character more for null-terminator.
#include <stdio.h>
#include <stdlib.h>
int x = -42;
int length = snprintf( NULL, 0, "%...
Understanding Node.js modules: multiple requires return the same object?
...eive the same instance of A. From the node.js documentation:
... every call to require('foo') will get exactly the same object returned, if it would resolve to the same file.
The situation is different when a.js, b.js and app.js are in different npm modules. For example:
[APP] --> [A], ...
What is the difference between Forking and Cloning on GitHub?
...ook at is out-of-date. Forks are like the Maven repository problem on steroids. Instead of one out of date repo (Maven), there's thousands of them (Git).
– jww
Feb 12 '17 at 6:13
...