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Good Free Alternative To MS Access [closed]
Consider the need to develop a lightweight desktop DB application on the Microsoft platforms.
28 Answers
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How does the bitwise complement operator (~ tilde) work?
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Remember that negative numbers are stored as the two's complement of the positive counterpart. As an example, here's the representation of -2 in two's complement: (8 bits)
1111 1110
The way you get this is by taking the binary representatio...
In Python, how do I iterate over a dictionary in sorted key order?
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Haven't tested this very extensively, but works in Python 2.5.2.
>>> d = {"x":2, "h":15, "a":2222}
>>> it = iter(sorted(d.iteritems()))
>>> it.next()
('a', 2222)
>>> it.next()
('h', 15)
>>> it.next()
('x', 2)
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上班狗来算算 你离财务自由还差多少钱？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...这种带着淡淡铜臭味的乡村梦想似乎不符合小伙伴们的装B需求，取而代之的是，我的梦想是实现财务...现在已经不流行说“我的梦想是赚大钱”了，因为这种带着淡淡铜臭味的乡村梦想似乎不符合小伙伴们的装B需求，取而代之...
Mocha / Chai expect.to.throw not catching thrown errors
I'm having issues getting Chai's expect.to.throw to work in a test for my node.js app. The test keeps failing on the thrown error, but If I wrap the test case in try and catch and assert on the caught error, it works.
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Git status shows files as changed even though contents are the same
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Update: as per the comment on this question, the problem has been solved:
That is easy: the first file has CRLF line-ends (windows), the second
LF (Unix). The file util (available in git\usr\bin) will show you that (file a b will reply
something like a: ASCII text, wit...
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))...
Is there an onSelect event or equivalent for HTML ?
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Here is the simplest way:
<select name="ab" onchange="if (this.selectedIndex) doSomething();">
<option value="-1">--</option>
<option value="1">option 1</option>
<option value="2">option 2</option>
<option v...
What is the dependency inversion principle and why is it important?
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Check this document out: The Dependency Inversion Principle.
It basically says:
High level modules should not depend upon low-level modules. Both should depend upon abstractions.
Abstractions should never depend upon details. Details should depend upon abstractions.
As to why it is im...
How to get an object's properties in JavaScript / jQuery?
In JavaScript / jQuery, if I alert some object, I get either [object] or [object Object]
7 Answers
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