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How to get current time and date in Android
How can I get the current time and date in an Android app?
40 Answers
40
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Adding placeholder text to textbox
I am looking for a way to add placeholder text to a textbox like you can with a textbox in html5.
24 Answers
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Select all child elements recursively in CSS
...x y matches every element y that is inside x, however deeply nested it may be - children, grandchildren and so on.
The asterisk * matches any element.
Official Specification: CSS 2.1: Chapter 5.5: Descendant Selectors
shar...
那些曾被追捧的90后创业男神女神，还好吗？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...消息称“泡否”可能不再继续做下去了，当时她本人给到Bianews的回答是，“仍在做”。但现在看来，“泡否”更多的被圈内人和创业者们当做一个特殊的案例，再谈到它的时候，没有人会问现在做的如何了。
延期熄火的最主要...
How to fix: “No suitable driver found for jdbc:mysql://localhost/dbname” error when using pools? [du
I am trying to create a connection to my database, when I put test my code using the main method, it works seamlessly. However, when trying to access it through Tomcat 7, it fails with error:
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What is the best way to compare floats for almost-equality in Python?
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Python 3.5 adds the math.isclose and cmath.isclose functions as described in PEP 485.
If you're using an earlier version of Python, the equivalent function is given in the documentation.
def isclose(a, b, rel_tol=1e-09, abs_tol=0.0):
return abs(a-b) <= max(rel_tol * max(abs(a), abs(b))...
How can I run a PHP script in the background after a form is submitted?
...on a notification website. In addition, I have a list of people who have signed up to receive these notifications via email and SMS message. This list is trivial as the moment (only pushing about 150), however it's enough to cause it takes upwards of a minute to cycle through the entire table of sub...
Truncate all tables in a MySQL database in one command?
... a database in one operation? I want to know if I can do this with one single query.
27 Answers
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Why does (1 in [1,0] == True) evaluate to False?
...xpression is translated to
(1 in [1, 0]) and ([1, 0] == True)
which is obviously False.
This also happens for expressions like
a < b < c
which translate to
(a < b) and (b < c)
(without evaluating b twice).
See the Python language documentation for further details.
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