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xcopy file, rename, suppress “Does xxx specify a file name…” message
...mple and maybe I'm just overlooking the proper flag , but how would I, in one command, copy a file from one directory to another and rename it in the destination directory? Here's my command:
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Why is Java's SimpleDateFormat not thread-safe? [duplicate]
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SimpleDateFormat stores intermediate results in instance fields. So if one instance is used by two threads they can mess each other's results.
Looking at the source code reveals that there is a Calendar instance field, which is used by operations on DateFormat / SimpleDateFormat.
For example p...
renderpartial with null model gets passed the wrong type
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@myandmycode's answer is good, but a slightly shorter one would be
<% Html.RenderPartial("TaskList", new ViewDataDictionary(Model.Tasks)); %>
This works because the ViewDataDictionary is the thing that holds the model, and it can accept a model as a constructor paramete...
How update the _id of one MongoDB Document?
I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get:
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How to find elements by class
...trow")
It would also work for:
soup.find_all("div", class_="stylelistrowone stylelistrowtwo")
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What is the difference between dict.items() and dict.iteritems() in Python2?
...hod named iteritems(). The original remains for backwards compatibility.
One of Python 3’s changes is that items() now return iterators, and a list is never fully built. The iteritems() method is also gone, since items() in Python 3 works like viewitems() in Python 2.7.
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Does adding a duplicate value to a HashSet/HashMap replace the previous value
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In the case of HashMap, it replaces the old value with the new one.
In the case of HashSet, the item isn't inserted.
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In C++, what is a virtual base class?
...ual A {};
class D : public B, public C {};
This means that there is only one "instance" of A included in the hierarchy. Hence
D d;
d.Foo(); // no longer ambiguous
This is a mini summary. For more information, have a read of this and this. A good example is also available here.
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Insert a commit before the root commit in Git?
... newroot $commit
You can of course rearrange the whole procedure into a one-liner if you know your shell well enough.
Without plumbing
With regular porcelain commands, you cannot create an empty commit without checking out the newroot branch and updating the index and working copy repeatedly, f...
How do I dump the data of some SQLite3 tables?
..., as it should be easily re-entered into the database later and should be done from the command line. Something like
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