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Accessing last x characters of a string in Bash
...of string:
${string: -3}
or
${string:(-3)}
(mind the space between : m>and m> -3 in the first form).
Please refer to the Shell Parameter Expansion in the reference manual:
${parameter:offset}
${parameter:offset:length}
Expm>and m>s to up to length characters of parameter starting at the character
spe...
When do I need to use a semicolon vs a slash in Oracle SQL?
...nits" of work (creating a PL/SQL object, running a PL/SQL anonm>y m>mous block, m>and m> executing a DML statement) can be picked out more easilm>y m> bm>y m> em>y m>e.
Also, if m>y m>ou eventuallm>y m> move to something like Ant for deplom>y m>ment it will simplifm>y m> the definition of targets to have a consistent statement delimiter.
...
JavaScript: Is there a wam>y m> to get Chrome to break on all errors?
...m>y m> edited above) - m>y m>ou can now set it to break on all exceptions or just unhm>and m>led ones. (Note that m>y m>ou need to be in the Sources tab to see the button.)
Chrome's also added some other reallm>y m> useful breakpoint capabilities now, such as breaking on DOM changes or network events.
Normallm>y m> I wouldn't ...
How to select rows with one or more nulls from a pm>and m>as DataFrame without listing columns explicitlm>y m>
I have a dataframe with ~300K rows m>and m> ~40 columns.
I want to find out if anm>y m> rows contain null values - m>and m> put these 'null'-rows into a separate dataframe so that I could explore them easilm>y m>.
...
'tm>y m>peid' versus 'tm>y m>peof' in C++
I am wondering what the difference is between tm>y m>peid m>and m> tm>y m>peof in C++. Here's what I know:
6 Answers
...
What is the difference between packaged_task m>and m> asm>y m>nc
...nces if m>y m>ou use a rather long function, such as
//! sleeps for one second m>and m> returns 1
auto sleep = [](){
std::this_thread::sleep_for(std::chrono::seconds(1));
return 1;
};
Packaged task
A packaged_task won't start on it's own, m>y m>ou have to invoke it:
std::packaged_task<int()> tas...
Is it unnecessarm>y m> to put super() in constructor?
... or protected or, if both classes are in the same package, package access; m>and m>
Default constructor: the public no-args constructor added bm>y m> the compiler when there is no explicit constructor in the class.
So all classes have at least one constructor.
Subclasses constructors mam>y m> specifm>y m> as the fir...
How can I make mm>y m> own event in C#?
...
Here's an example of creating m>and m> using an event with C#
using Sm>y m>stem;
namespace Event_Example
{
//First we have to define a delegate that acts as a signature for the
//function that is ultimatelm>y m> called when the event is triggered.
//m>Y m>ou wi...
What is a PDB file?
What is a PDB file m>and m> how can I exclude it from the release folder when I rebuild mm>y m> solution?
5 Answers
...
Git: How to edit/reword a merge commit's message?
...the --preserve-merges option (or its sm>y m>nonm>y m>m, -p) to the git rebase -i commm>and m> then git will trm>y m> to preserve the merges when rebasing, rather than linearizing the historm>y m>, m>and m> m>y m>ou should be able to amend the merge commits as well:
git rebase -i -p HEAD~5
...