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App Inventor 2 AlphaDialog 对话框扩展 · App Inventor 2 中文网
...按钮时创建并显示对话框，关闭后更新页面：
when 按钮_打开.Click() {
AlphaDialog1.CreateDialog(垂直布局_对话框, true)
AlphaDialog1.Show()
}
when 按钮_关闭.Click() {
AlphaDialog1.Dismiss()
}
when AlphaDialog1.OnDismiss() {
标签_状态.Text = "对话框已...
How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
... [^0-9] Any single character that's not a digit
\w [a-zA-Z0-9_] Any word character
\W [^a-zA-Z0-9_] Any non-word character
\s [ \r\t\n\f] Any space character
\S [^ \r\t\n\f] Any non-space character
\n [\n] New line
Example 1: Run as macro
The following...
Why are regular expressions so controversial? [closed]
...another example of a modern grammatical pattern, this one for parsing RFC 5322:
use 5.10.0;
$rfc5322 = qr{
(?(DEFINE)
(?<address> (?&mailbox) | (?&group))
(?<mailbox> (?&name_addr) | (?&addr_spec))
(?<name_addr> (?&...
Open URL in same window and in same tab
...eed to use the name attribute:
window.open("https://www.youraddress.com","_self")
Edit: Url should be prepended with protocol. Without it tries to open relative url. Tested in Chrome 59, Firefox 54 and IE 11.
share
...
Properties file in python (similar to Java Properties)
...
James OravecJames Oravec
15.7k2323 gold badges7474 silver badges139139 bronze badges
...
Validating with an XML schema in Python
...et's create simplest validator.py
from lxml import etree
def validate(xml_path: str, xsd_path: str) -> bool:
xmlschema_doc = etree.parse(xsd_path)
xmlschema = etree.XMLSchema(xmlschema_doc)
xml_doc = etree.parse(xml_path)
result = xmlschema.validate(xml_doc)
return result...
What is your naming convention for stored procedures? [closed]
...
For my last project i used usp_[Action][Object][Process] so for example, usp_AddProduct or usp_GetProductList, usp_GetProductDetail. However now the database is at 700 procedures plus, it becomes a lot harder to find all procedures on a specific object. F...
Add list to set?
...rticle. Pythons hashing algorithms are explained on effbot.org and pythons __hash__ function in the python reference.
Some facts:
Set elements as well as dictionary keys have to be hashable
Some unhashable datatypes:
list: use tuple instead
set: use frozenset instead
dict: has no official count...
How do I get the current date and time in PHP?
.... An easy workaround for this is to manually set the timezone by using date_default_timezone_set before the date() or time() functions are called to.
I'm in Melbourne, Australia so I have something like this:
date_default_timezone_set('Australia/Melbourne');
Or another example is LA - US:
date_...
What is the most efficient way of finding all the factors of a number in Python?
...om functools import reduce
def factors(n):
return set(reduce(list.__add__,
([i, n//i] for i in range(1, int(n**0.5) + 1) if n % i == 0)))
This will return all of the factors, very quickly, of a number n.
Why square root as the upper limit?
sqrt(x) * sqrt(x) = x. So if t...