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How can I push a specific commit to a remote, and not previous commits?
...fails if the remote branch does not yet exist. Creating the branch can be done with git push <remotename> <commit SHA>:refs/heads/<new remote branch name>. After this, push as the answer describes.
– Wes Oldenbeuving
Sep 7 '12 at 9:54
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How to test Spring Data repositories?
...rely on our test base to catch basic bugs (if you still happen to run into one, feel free to raise a ticket). However, there's definitely need for integration tests to test two aspects of your persistence layer as they are the aspects that related to your domain:
entity mappings
query semantics ...
How to RSYNC a single file?
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Also if you are only sending one file you may want to add the "--progress" parameter so you can watch it's progress.
– JoshStrange
Feb 28 '14 at 20:48
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Geometric Mean: is there a built-in?
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No, but there are a few people who have written one, such as here.
Another possibility is to use this:
exp(mean(log(x)))
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Any way to declare an array in-line?
... pretty nice syntax, but with this method you can have only one array parameter, and it must be the last one. So, you can't do: void m(String... strs, Integer... intgrs) for example.
– bluefoot
Mar 1 '11 at 1:39
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What is CMake equivalent of 'configure --prefix=DIR && make all install '?
...pecify the install prefix at configure-time, and then build and install in one step as follows:
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX:PATH=/path/to/install /path/to/src
$ cmake --build . --target install
You would either add --config Release to the third command or -DCMAKE_BUILD_TYPE=Release ...
Concatenate two string literals
... string literals "Hello" and ",world" are "added" first, hence the error.
One of the first two strings being concatenated must be a std::string object:
const string message = string("Hello") + ",world" + exclam;
Alternatively, you can force the second + to be evaluated first by parenthesizing th...
How do I move forward and backward between commits in git?
...m now trying to get a step forward/backward to make sure I am in the right one.
12 Answers
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Why is it faster to check if dictionary contains the key, rather than catch the exception in case it
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On the one hand, throwing exceptions is inherently expensive, because the stack has to be unwound etc.
On the other hand, accessing a value in a dictionary by its key is cheap, because it's a fast, O(1) operation.
BTW: The correct ...
sed edit file in place
... without Perl are broken. A single command trumps a chain of commands when one wants elevated permissions and must use sudo. In my mind, the question is about how to avoid manually creating and renaming a temporary file without having to install the latest GNU or BSD sed. Just use Perl.
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