大约有 32,000 项符合查询结果（耗时：0.0393秒） [XML]
chart.js load totally new data
...
I had huge problems with this
First I tried .clear() then I tried .destroy() and I tried setting my chart reference to null
What finally fixed the issue for me: deleting the <canvas> element and then reappending a new <canvas> to the parent container
There's a m...
How can I check if a Perl array contains a particular value?
...r most cases. If you're talking about short arrays (less than 1000 items) then most algorithms are going to be pretty fast anyway. If you're talking about very long arrays (1,000,000 items) grep is acceptably quick regardless of whether the item is the first or the middle or last in the array.
Op...
Python's json module, converts int dictionary keys to strings
...ping semantics.
If both ends of your serialization are going to be Python then you'd be better off using pickles. If you really need to convert these back from JSON into native Python objects I guess you have a couple of choices. First you could try (try: ... except: ...) to convert any key to a ...
UIButton inside a view that has a UITapGestureRecognizer
...tes the gesture recognizer) as the delegate of the UITapGestureRecognizer. Then in the delegate you can implement -gestureRecognizer:shouldReceiveTouch:. In your implementation you can test if the touch belongs to your new subview, and if it does, instruct the gesture recognizer to ignore it. Someth...
Capture HTML Canvas as gif/jpg/png/pdf?
...The document.write code is making the data URL, them making a HTML string, then putting a copy of that string in the DOM, the browser then has to parse that HTML string, put another copy on the image element, then parse it again to turn the data URL into image data, then finally it can show the imag...
How useful/important is REST HATEOAS ( maturity level 3)?
...e to communicate changes quickly, reliably, and with a schedule of change, then REST buys you nothing. You don't need it, your app isn't big enough, and it's not long lived enough to matter.
Large sites with large user bases do have this problem. They can't just ask folks to change their client cod...
Requirejs domReady plugin vs Jquery $(document).ready()?
... the execution of the contents that is time sensitive.
If you omit the !, then it's just a normal module that happens to be a function, which can take a callback that won't execute before the DOM is safe to interact with:
define(['domReady'], function (domReady) {
domReady(function () {
...
How to detect first time app launch on an iPhone
...
@mrEmpty 1. ??? It returns BOOL. 2. Then the error is in your code... if returning 0 makes this crash, then something is terribly wrong -- elsewhere.
– user529758
Nov 22 '13 at 17:52
...
CentOS 64 bit bad ELF interpreter
... for apt-file
sudo apt-get install apt-file && apt-file update
then search with
apt-file find libSM.so.6
Note the prefix path /usr/lib in the (usual) case; rarely, some libraries still live under /lib for historical reasons … On typical 64-bit systems, 32-bit libraries live in /usr...
Java EE 6 @javax.annotation.ManagedBean vs. @javax.inject.Named vs. @javax.faces.ManagedBean
...ar files in deployment time and gather and store some metadata about them, then when you need an object of a class at runtime they will give you instances of those classes and after finishing the job, they will destroy them.
So we can say that we have:
JSF managed beans
CDI managed beans
EJB mana...