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bash: shortest way to get n-th column of output
... invoked with a non-numeric argument or the incorrect number of arguments, etc; but expanding on this bare-bones essential version will be in unit 102.
Maybe you will want to extend the script to allow a different column delimiter. Awk by default parses input into fields on whitespace; to use a di...
Java String - See if a string contains only numbers and not letters
...s and decimals included). For example, it will match 1, 10, 1.0, -1, -1.0, etc. It'll also match on "1." but that can often be parsed anyway.
– user358089
Dec 4 '14 at 19:59
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Calling Java from Python
...nd Py4J has its own protocol (to optimize certain cases, to manage memory, etc.)
Disclaimer: I am the author of Py4J
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Combining node.js and Python
... as the server or vice-versa
API connection with Express/Flask/Tornado etc working separately with an API endpoint exposed for the other to query
Approach 1 Python Shell Simplest approach
source.js file
const ps = require('python-shell')
// very important to add -u option since our python s...
Starting python debugger automatically on error
...run until the error is encountered. From there you can inspect variables, etc. like in any other pdb session.
– Catherine Devlin
Dec 17 '14 at 16:41
42
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Access data in package subdirectory
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This will not work in case of distribution (egg etc).
– Adarsh Trivedi
May 3 '19 at 9:25
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Select row with most recent date per user
...ubqueries in views AFAIK. would i have to turn each sub query into a view, etc.?
– Keith
Jun 11 '13 at 7:20
join ...
sql primary key and index
...v is constrained overhead for index fragmentation, imperfect tree balance, etc.. Thus 2 billion rows would be log base 2 of 2,000,000,000 (about 31 seeks) times, say, 2 or 3 or even 10. 40M inserts per day is about 462/sec, ~100 IO's per insert... Ahh... Oh. I see. And this was before widespread SSD...
Can I set up HTML/Email Templates with ASP.NET?
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If you want to pass parameters like user names, product names, ... etc. you can use open source template engine NVelocity to produce your final email / HTML's.
An example of NVelocity template (MailTemplate.vm) :
A sample email template by <b>$name</b>.
<br />
Foreach e...
How do I display an alert dialog on Android?
...ilder(context);
builder1.setMessage("Write your message here.");
builder1.setCancelable(true);
builder1.setPositiveButton(
"Yes",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
builder1.se...