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How to attach my repo to heroku app
I create a heroku app and then my machine crashed. I have a new machine. How do I attach my existing app to heroku app. When I visit heroku page the url for my app is like this
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The performance impact of using instanceof in Java
I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO design generally tries to avoid using instanceof , that is a different story and this question is purely related to performance. I was wondering if there is any per...
How to make an element in XML schema optional?
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Indeed, tested it, and you only need to specify minOccurs="0" to make it optional if you want to allow one element max.
– Wouter Schut
Jan 10 '17 at 8:42
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How can I make git ignore future revisions to a file?
...ree default_values.txt
That will ignore changes to that file, both local and upstream, until you decide to allow them again with:
git update-index --no-skip-worktree default_values.txt
You can get a list of files that are marked skipped with:
git ls-files -v . | grep ^S
Note that unlike --sk...
Message Queue vs. Web Services? [closed]
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When you use a web service you have a client and a server:
If the server fails the client must take responsibility to handle the error.
When the server is working again the client is responsible of resending it.
If the server gives a response to the call and the clien...
How do I activate C++ 11 in CMake?
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CMake 3.1 introduced the CMAKE_CXX_STANDARD variable that you can use. If you know that you will always have CMake 3.1 available, you can just write this in your top-level CMakeLists.txt file, or put it right before any new target is defined:
set (CMAKE_CXX_ST...
How to set custom header in Volley Request
... Here's another example (the snippet at the end of the page): developer.android.com/training/volley/request-custom.html. Class GsonRequest overrides method getHeaders() to return a Map with the header parameters you pass in the constructor.
– Juan José Melero Gómez
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What's a 3D doing in this HTML?
...esented as ASCII for email transportation.
In quoted-printable, any non-standard email octets are represented as an = sign followed by two hex digits representing the octet's value. Of course, to represent a plain = in email, it needs to be represented using quoted-printable encoding too: 3D are th...
Why should I use Google's CDN for jQuery?
...This makes the time-to-download very small, because it is super compressed and it isn't compressed on the fly.)
It reduces the amount of bandwidth used by your server. (Google is basically offering free bandwidth.)
It ensures that the user will get a geographically close response. (Google has serv...
git difftool, open all diff files immediately, not in serial
...m a directory diff.
This feature works well with Meld 3.14.2 for example, and lets you browse all modified files:
git difftool --dir-diff --tool=meld HEAD~ HEAD
This is a handy Bash function:
git-diff-meld() (
git difftool --dir-diff --tool=meld "${1:-HEAD~}" "${2:-HEAD}"
)
The answer that ...