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Is git's semi-secret empty tree object reliable, and why is there not a symbolic name for it?
...0 +0000" GIT_COMMITTER_DATE="Thu, 01 Jan 1970 00:00:00 +0000" git commit --allow-empty -m 'Initial commit'
Will give you:
(See the tree SHA1?)
You can even rebase your existing history on top of that empty commit (see "git: how to insert a commit as the first, shifting all the others?")
In bo...
Alias with variable in bash [duplicate]
...or that, rather than alias, and then exported it, like this:
function tail_ls { ls -l "$1" | tail; }
export -f tail_ls
Note -f switch to export: it tells it that you are exporting a function. Put this in your .bashrc and you are good to go.
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How can I copy the content of a branch to a new local branch?
...e work completely. I was thinking of something like create a new branch locally and copy the old branch there, then I can revert the changes and continue working on the old branch. Is there a better way maybe? Or how do I do this?
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scheduleAtFixedRate vs scheduleWithFixedDelay
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Try adding a Thread.sleep(1000); call within your run() method... Basically it's the difference between scheduling something based on when the previous execution ends and when it (logically) starts.
For example, suppose I schedule an alarm to go off with a f...
How can prepared statements protect from SQL injection attacks?
... the query and the data are sent to the database server separately.
That's all.
The root of the SQL injection problem is in the mixing of the code and the data.
In fact, our SQL query is a legitimate program.
And we are creating such a program dynamically, adding some data on the fly. Thus, th...
ACE vs Boost vs POCO [closed]
... situation. The good things about POCO IMO:
Better thread library, especially a Active Method implementation. I also like the fact that you can set the thread priority.
More comprehensive network library than boost::asio. However boost::asio is also a very good library.
Includes functionality that...
Django class-based view: How do I pass additional parameters to the as_view method?
...endation of practices, and in python community it's a rule of thumb to use all of these practices as much as possible to avoid further problems. My linter is always empty when I commit my code :) no matter what.
– holms
Apr 6 '18 at 18:23
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SQL Server - transactions roll back on error?
...xact_abort on before your transaction to make sure sql rolls back automatically in case of error.
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How to see query history in SQL Server Management Studio
...tary format. However if you need to see queries that were executed historically (except SELECT) this is the only way.
You can use third party tools for this such as ApexSQL Log and SQL Log Rescue (free but SQL 2000 only). Check out this thread for more details here SQL Server Transaction Log Explo...
How to refresh an IFrame using Javascript?
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var tmp_src = iframe.src; iframe.src = ''; iframe.src = tmp_src;
– lyfing
Jan 27 '15 at 8:28
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