大约有 45,000 项符合查询结果（耗时：0.0512秒） [XML]
PostgreSQL: Which Datatype should be used for Currency?
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Numeric with forced 2 units precision. Never use float or float like datatype to represent currency because if you do, people are going to be unhappy when the financial report's bottom line figure is incorrect by + or - a few dollars.
The mon...
Generating random numbers in Objective-C
...C Library (libc, -lc)
SYNOPSIS
#include <stdlib.h>
u_int32_t
arc4random(void);
void
arc4random_stir(void);
void
arc4random_addrandom(unsigned char *dat, int datlen);
DESCRIPTION
The arc4random() function uses the key stream generator employed by the...
AJAX Mailchimp signup form integration
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242
You don't need an API key, all you have to do is plop the standard mailchimp generated form in...
Facebook API “This app is in development mode”
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205
I know its a little bit late but someone may find this useful in future.
STEP 1:
Login to fa...
What is the maximum float in Python?
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279
For float have a look at sys.float_info:
>>> import sys
>>> sys.float_info
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Inserting image into IPython notebook markdown
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213
Files inside the notebook dir are available under a "files/" url. So if it's in the base path...
How to allow only numeric (0-9) in HTML inputbox using jQuery?
...nput text field in which I want to allow only numeric characters like (0,1,2,3,4,5...9) 0-9.
68 Answers
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How to install psycopg2 with “pip” on Python?
I'm using virtualenv and I need to install "psycopg2".
33 Answers
33
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How to apply multiple transforms in CSS?
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You have to put them on one line like this:
li:nth-child(2) {
transform: rotate(15deg) translate(-20px,0px);
}
When you have multiple transform directives, only the last one will be applied. It's like any other CSS rule.
Keep in mind multiple transform one line directives ...
how to use XPath with XDocument?
...Name);
var name = document.Descendants(XName.Get("Name", @"http://demo.com/2011/demo-schema")).First().Value;
If you are sure that XPath is the only solution you need:
using System.Xml.XPath;
var document = XDocument.Load(fileName);
var namespaceManager = new XmlNamespaceManager(new NameTable())...