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How to print a stack trace in Node.js?
...ke the current Node version does.
Note: if the exception is created as a string like throw "myException", it's not possible to retrieve the stack trace and logging e.stack yields undefined.
To be safe, you can use
console.error(e.stack || e);
and it will work for old and new Node.js versions....
Unexpected Caching of AJAX results in IE8
...e
});
which will cause jQuery to add a random value to the request query string, thereby preventing IE from caching the response.
Note that if you have other Ajax calls going on where you do want caching, this will disable it for those too. In that case, switch to using the $.ajax() method and en...
Difference between len() and .__len__()?
...ther than raising an exception". I tried this: def len(x): return "I am a string." print(len(42)) print(len([1,2,3])) and it printed I am string twice. Can you explain it more?
– Darek Nędza
May 3 '14 at 8:19
...
Pipe output and capture exit status in Bash
... Bonus: in the end the exit status is actually an exit status and not some string in a file.
Situation:
someprog | filter
you want the exit status from someprog and the output from filter.
Here is my solution:
((((someprog; echo $? >&3) | filter >&4) 3>&1) | (read xs; exit...
Patterns for handling batch operations in REST web services?
... if (this.isCommand(cmd))
{
data += cmd.toRequestString();
this.sent[cmd.id] = cmd;
// ... and then send the contents of data in a POST request
}
}
}
That ought to get you going. Good luck!
...
How to get StackPanel's children to fill maximum space downward?
...g space up between its child elements (giving them each the same amount of extra space). Elements should render fine if they are given more space than they wanted, but if you give them less you will start to see glitches.
If you want to be able to scroll the whole thing then I am afraid things wil...
Pragma in define macro
...andard, or 16.9 of the c++0x final committee draft)
For example,
#define STRINGIFY(a) #a
#define DEFINE_DELETE_OBJECT(type) \
void delete_ ## type ## _(int handle); \
void delete_ ## type(int handle); \
_Pragma( STRINGIFY( weak de...
Tool to read and display Java .class versions
...version.
import java.io.*;
public class Demo {
public static void main(String[] args) throws IOException {
ClassLoader loader = Demo.class.getClassLoader();
try (InputStream in = loader.getResourceAsStream("Demo.class");
DataInputStream data = new DataInputStream(in)) {
if ...
IN clause and placeholders
...
A string of the form "?, ?, ..., ?" can be a dynamically created string and safely put into the original SQL query (because it is a restricted form that does not contain external data) and then the placeholders can be used as n...
Why should eval be avoided in Bash, and what should I use instead?
...not been rewritten as safe-for-use-in-situation-XYZ; in our case, it's any string that has not been formatted so as to be safe for evaluation.
Sanitizing data appears easy at first glance. Assuming we're throwing around a list of options, bash already provides a great way to sanitize individual el...