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In Python, how do I create a string of n characters in one line of code?
...stion, but for those interested in the randomness of the generated string, my answer would be:
import os
import string
def _pwd_gen(size=16):
chars = string.letters
chars_len = len(chars)
return str().join(chars[int(ord(c) / 256. * chars_len)] for c in os.urandom(size))
See these ans...
How to print full stack trace in exception?
...l exception information (including the inner stack trace) in text:
catch (MyCustomException ex)
{
Debug.WriteLine(ex.ToString());
}
Sample output:
ConsoleApplication1.MyCustomException: some message .... ---> System.Exception: Oh noes!
at ConsoleApplication1.SomeObject.OtherMethod() in...
SQLite add Primary Key
...are creating the primary key on a single field, you can use:
CREATE TABLE mytable (
field1 TEXT,
field2 INTEGER PRIMARY KEY,
field3 BLOB,
);
With CREATE TABLE, you can also always use the following approach to create a primary key on one or multiple fields:
CREATE TABLE mytable (
field1 TEXT,
fi...
How can I make gdb save the command history?
...
Just found this out for myself and thought I'd share it on SO.
– Frank
Jul 5 '10 at 1:21
3
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Show filename and line number in grep output
I am trying to search my rails directory using grep. I am looking for a specific word and I want to grep to print out the file name and line number.
...
What is the difference between ports 465 and 587?
... becoming history. 456 still being used by big players. Also, i would edit my answer to reflect that IANA is a mess, and they still dont agree if they should use 456 or not - RFC 8314 tools.ietf.org/html/rfc8314#page-6 - When a TCP connection is established for the "submissions" service (default po...
Space between two rows in a table?
...
@Jan: Yeah, exactly my point... It's quite difficult to put transparent empty space between rows. Your solution helps in some instances, but doesn't solve that problem. Inserting an empty table row might work, but it's f'ugly. A bottom-border...
What is a handle in C++?
... defines the type of the handle. I tried to make a more concise version of my own similar answer, couldn't help myself, for posterity. @CornelVerster - They are the same in linux. I mean, not OS handles, but the concept. So, it depends on the handle as to its migration, or even need to migrate.
...
What is `git diff --patience` for?
...
In my experience with XML for now, it gives exactly the same "bad" results as a normal diff.
– stivlo
Jun 23 '11 at 14:25
...
push_back vs emplace_back
...e. The fact that emplace_back is "implicitly" explicit makes me think that my go-to function for appending should probably be push_back. Thoughts?
– Ben
Oct 25 '19 at 19:19
...