大约有 10,700 项符合查询结果（耗时：0.0287秒） [XML]
What is Cache-Control: private?
...
To answer your question about why caching is working, even though the web-server didn't include the headers:
Expires: [a date]
Cache-Control: max-age=[seconds]
The server kindly asked any intermediate proxies to not cache the contents (i.e. the item shoul...
demystify Flask app.secret_key
... Flask itself, that 'anything' is the Session object, but other extensions can make use of the same secret.
secret_key is merely the value set for the SECRET_KEY configuration key, or you can set it directly.
The Sessions section in the Quickstart has good, sane advice on what kind of server-side ...
Why do we need fibers
...
Fibers are something you will probably never use directly in application-level code. They are a flow-control primitive which you can use to build other abstractions, which you then use in higher-level code.
Probably the #1 use of fibers in Ruby is to implement Enumerators, which are a core...
How does the const constructor actually work?
...
Const constructor creates a "canonicalized" instance.
That is, all constant expressions begin canonicalized, and later these "canonicalized" symbols are used to recognize equivalence of these constants.
Canonicalization:
A process for converting data ...
How to pull request a wiki page on GitHub?
...repository, only the main repository (this is a bit of a shame, IMO, but I can understand it).
Here's an interesting way one project manages community updates to their wiki, while still keeping tight control, as for source code:
My proposed workflow is this:
Manually create a fork of th...
How to extract a git subdirectory and make a submodule out of it?
...warr/git-subtree.git
cd git-subtree
sudo rsync -a ./git-subtree.sh /usr/local/bin/git-subtree
Or if you want the man pages and all
make doc
make install
Usage
Split a larger into smaller chunks:
# Go into the project root
cd ~/my-project
# Create a branch which only contains commits for the...
How can I deploy/push only a subdirectory of my git repo to Heroku?
... Assuming you want to push your folder 'output' as the root to Heroku, you can do:
git subtree push --prefix output heroku master
It appears currently that git-subtree is being included into git-core, but I don't know if that version of git-core has been released yet.
...
What is the difference between the states selected, checked and activated in Android?
...
So here is the difference:
Activated was introduced in Honeycomb so you can't use it before that
Activated is now a property of every View. It has methods setActivated() and isActivated()
Activated propagates to children of the View on which it is set
Checked revolves around a View implementing t...
How to use WeakReference in Java and Android development?
... to protect the object from the garbage collector. A classic example is a cache that you want to be garbage collected when memory usage gets too high (often implemented with WeakHashMap).
Be sure to check out SoftReference and PhantomReference as well.
EDIT: Tom has raised some concerns over impl...
How do I change selected value of select2 dropdown with JqGrid?
...s might not work, however the following examples should work.
Solution 1: Causes all attached change events to trigger, including select2
$('select').val('1').trigger('change');
Solution 2: Causes JUST select2 change event to trigger
$('select').val('1').trigger('change.select2');
See this js...