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How do I change bash history completion to complete what's already on the line?
...h-backward
"\e[B": history-search-forward
or equivalently,
# ~/.bashrc
if [[ $- == *i* ]]
then
bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'
fi
(the if statement checks for interactive mode)
Normally, Up and Down are bound to the Readline functions previ...
Regular expression for first and last name
... A-Z does not need to be included in the original example because the i modifier after the expression means ignore case.
– mhanney
Jul 21 '15 at 16:18
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Access Denied for User 'root'@'localhost' (using password: YES) - No Privileges?
...
it give: ERROR 1054 (42S22): Unknown column 'Password' in 'field list' error. @AndyJones
– alper
Mar 31 '17 at 21:58
1
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Change values while iterating
...that range copies the values from the slice you're iterating over.
The specification about range says:
Range expression 1st value 2nd value (if 2nd variable is present)
array or slice a [n]E, *[n]E, or []E index i int a[i] E
So, range us...
Pimpl idiom vs Pure virtual class interface
...s case, because it's the only member) from the pointer to the A object it knows to be this.
On the user side of the code, a new A will first allocate sizeof(A) bytes of memory, then hand a pointer to that memory to the A::A() constructor as this.
If in a later revision of your library you decide t...
Django: accessing session variables from within a template?
If I set a session variable in Django, like:
9 Answers
9
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dynamic_cast and static_cast in C++
...t runtime, and work by querying the object (no need to worry about how for now), asking it if it the type we're looking for. If it is, dynamic_cast<Type*> returns a pointer; otherwise it returns NULL.
In order for this base-to-derived casting to work using dynamic_cast<>, Base, Foo and...
A variable modified inside a while loop is not remembered
...or the original Bourne shell, but don't have access to a running copy just now to check.
There is, however, a very trivial workaround to the problem.
Change the first line of the script from:
#!/bin/bash
to
#!/bin/ksh
Et voila! A read at the end of a pipeline works just fine, assuming you ha...
Pandas count(distinct) equivalent
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What if I have multiple columns that I want to be unique together, like in .drop_duplicates(subset=['col1','col2'])?
– ErnestScribbler
Oct 2 '17 at 8:10
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How to delete a row by reference in data.table?
...ated to assignment by reference versus copying in data.table . I want to know if one can delete rows by reference, similar to
...