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Only get hash value using md5sum (without filename)
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How come echo ($(echo -n foo | md5sum)) doesn't work? Errors out bash: syntax error near unexpected token $(echo -n foo | md5sum)'
– lkraav
Aug 26 '15 at 4:42
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Recursive file search using PowerShell
...witch:
Get-ChildItem -Path V:\Myfolder -Filter CopyForbuild.bat -Recurse -ErrorAction SilentlyContinue -Force
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How can I filter a date of a DateTimeField in Django?
...ised it got 4 upvotes, because when I try the contains solution, I get the error message: Unable to get repr for <class 'django.db.models.query.QuerySet'>
– Houman
Jan 13 '13 at 13:13
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Do I encode ampersands in ?
... then a semicolon. That ampersand is now ambiguous, and will cause a parse error.
– matty
Aug 10 '15 at 0:12
As Jukka ...
How to make good reproducible pandas examples
...owscitation needed, and I bet I can do it in 5 rows. Can you reproduce the error with df = df.head(), if not fiddle around to see if you can make up a small DataFrame which exhibits the issue you are facing.
* Every rule has an exception, the obvious one is for performance issues (in which case de...
Retrieve column names from java.sql.ResultSet
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Tried it on a teradata database and got the error "[Teradata Database] [TeraJDBC 16.20.00.02] [Error 9719] [SQLState HY000] QVCI feature is disabled."
– josepainumkal
Oct 10 '19 at 18:29
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linux: kill background task
... job. If a prefix matches more than one job, bash
reports an error. Using %?ce, on the other hand, refers to any job containing the string ce in its command line. If the
substring matches more than one job, bash reports an error. The symbols %% and %+ refer to the shell's n...
Passing an array by reference
...0 integers. You can safely use sizeof on x
void foo(int & x[100]); // error
This is parsed as an "array of references" - which isn't legal.
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ssh: Could not resolve hostname [hostname]: nodename nor servname provided, or not known
...ue why. When I try to ssh into my server with user@hostname , I get the error:
14 Answers
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How to throw a C++ exception
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Just add throw where needed, and try block to the caller that handles the error. By convention you should only throw things that derive from std::exception, so include <stdexcept> first.
int compare(int a, int b) {
if (a < 0 || b < 0) {
throw std::invalid_argument("a or b n...