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Show an image preview before upload
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HTML5 comes with File API spec, which allows you to create applications that let the user interact with files locally; That means you can load files and render them in the browser without actually having to upload the files. Part of the File API i...
Emulator error: This AVD's configuration is missing a kernel file
...hint (see here) - with
Android SDK Tools rev 17 or higher
Android 4.0.3 (API Level 15)
using SDK rev 3 and System Image rev 2 (or higher)
you are able to turn on GPU emulation to get a faster emulator:
Note : As per you786 comment if you have previously created emulator then you need to recrea...
Faster s3 bucket duplication
...i to sync between buckets:
aws s3 sync speed depends on:
- latency for an API call to S3 endpoint
- amount of API calls made in concurrent
To increase sync speed:
- run aws s3 sync from an AWS instance (c3.large on FreeBSD is OK ;-) )
- update ~/.aws/config with:
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HTTP status code 0 - Error Domain=NSURLErrorDomain?
...
There is no HTTP status code 0. What you see is a 0 returned by the API/library that you are using. You will have to check the documentation for that.
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C++ valarray vs. vector
... The syntax is different, but I wouldn't call the difference "sugar." The API is weird. The section on std::valarrays in The C++ Programming Language mentions this unusual API and the fact that, since std::valarrays are expected to be highly optimized, any error messages you get while using them w...
Which is the best library for XML parsing in java [closed]
...es shamelessly copied from some old lecture slides ;-)
Edit: About "which API should I use?". Well it depends - not all APIs have the same capabilities as you see, but if you have control over the classes you use to map the XML document JAXB is my personal favorite, really elegant and simple soluti...
Rendering JSON in controller
...itional data without fully reloading the page.
or
B) You are building an API that third parties will be consuming and you have decided to use JSON to serialize your data.
Or, possibly, you are eating your own dogfood and doing both
In both cases render :json => some_data will JSON-ify the pro...
How to add a “readonly” attribute to an ?
... should be changed to .prop() rather than .attr(), as stated in the jQuery API: jquery.com/upgrade-guide/1.9/#attr-versus-prop-
– frshca
Feb 5 '13 at 20:54
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Getting user input [duplicate]
...n be used like this, with validation functions:
import re
import os.path
api_key = prompt(
message = "Enter the API key to use for uploading",
errormessage= "A valid API key must be provided. This key can be found in your user profile",
isvalid = lambda v : re.search(r"(([...
Get data from file input in JQuery
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You can try the FileReader API. Do something like this:
<!DOCTYPE html>
<html>
<head>
<script>
function handleFileSelect()
{
if (!window.File || !window.FileReader || !window....