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Why does my JavaScript code receive a “No 'Access-Control-Allow-Origin' header is present on the req
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If I understood it right you are doing an XMLHttpRequest to a different domain than your page is on. So the browser is blocking it as it usually allows a request in the same origin for security reasons. You need to do something different when you want to do a cross-doma...
iPhone App 开发第一步：从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...麻烦。
安装过程我也是网上学来的，可参考此文：http://bbs.weiphone.com/read-htm-tid-1628444.html
要注意几个要点就是：（1）引导的iso要用对，在安装系统之前，因为是amd的机器（intel已经可以装lion了，此处不再讨论），应用...
How to read data From *.CSV file using javascript?
... }
lines.push(tarr);
}
}
// alert(lines);
}
http://jsfiddle.net/mblase75/dcqxr/
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Installing Python 3 on RHEL
...manually:
Download (there may be newer releases on Python.org):
$ wget https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tar.xz
Unzip
$ tar xf Python-3.*
$ cd Python-3.*
Prepare compilation
$ ./configure
Build
$ make
Install
$ make install
OR if you don't want to overwrite the pyth...
Python argparse mutual exclusive group
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There is a python patch (in development) that would allow you to do this.
http://bugs.python.org/issue10984
The idea is to allow overlapping mutually exclusive groups. So usage might look like:
pro [-a xxx | -b yyy] [-a xxx | -c zzz]
Changing the argparse code so you can create two groups like...
How to limit the maximum value of a numeric field in a Django model?
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You could also create a custom model field type - see http://docs.djangoproject.com/en/dev/howto/custom-model-fields/#howto-custom-model-fields
In this case, you could 'inherit' from the built-in IntegerField and override its validation logic.
The more I think about this, I re...
Convert SVG to image (JPEG, PNG, etc.) in the browser
...:
Use the canvg JavaScript library to render the SVG image using Canvas: https://github.com/gabelerner/canvg
Capture a data URI encoded as a JPG (or PNG) from the Canvas, according to these instructions: Capture HTML Canvas as gif/jpg/png/pdf?
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When should I use ugettext_lazy?
...d and untranslated. See the following example:
import logging
from django.http import HttpResponse
from django.utils.translation import ugettext as _, ugettext_noop as _noop
def view(request):
msg = _noop("An error has occurred")
logging.error(msg)
return HttpResponse(_(msg))
...
ADB Shell Input Events
... "KEYCODE_MOVE_END"
The complete list of commands can be found on:
http://developer.android.com/reference/android/view/KeyEvent.html
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Get city name using geolocation
...me="viewport" content="initial-scale=1.0, user-scalable=no"/>
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>Reverse Geocoding</title>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script> ...