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How can I round a number in JavaScript? .toFixed() returns a string?
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127
It returns a string because 0.1, and powers thereof (which are used to display decimal fraction...
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本文档最初由米尔斯学院（Mills College）的 Kate Feeney 为 AI Classic 编写。该计...
Multiply TimeSpan in .NET
...= TimeSpan.FromMinutes(1);
duration = TimeSpan.FromTicks(duration.Ticks * 12);
Console.WriteLine(duration);
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Android Fragment lifecycle over orientation changes
Using the compatibility package to target 2.2 using Fragments.
7 Answers
7
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WCF chokes on properties with no “set ”. Any workaround?
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edited Feb 24 '10 at 2:45
answered Feb 24 '10 at 2:34
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Is there a way to pass optional parameters to a function?
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The Python 2 documentation, 7.6. Function definitions gives you a couple of ways to detect whether a caller supplied an optional parameter.
First, you can use special formal parameter syntax *. If the function definition has a formal p...
quick random row selection in Postgres
... myid FROM mytable OFFSET floor(random()*N) LIMIT 1;
Consider a table of 2 rows; random()*N generates 0 <= x < 2 and for example SELECT myid FROM mytable OFFSET 1.7 LIMIT 1; returns 0 rows because of implicit rounding to nearest int.
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Putting an if-elif-else statement on one line?
...t's less readable:
>>> i=100
>>> a = 1 if i<100 else 2 if i>100 else 0
>>> a
0
>>> i=101
>>> a = 1 if i<100 else 2 if i>100 else 0
>>> a
2
>>> i=99
>>> a = 1 if i<100 else 2 if i>100 else 0
>>> a
1
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What is the proper way to format a multi-line dict in Python?
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I use #3. Same for long lists, tuples, etc. It doesn't require adding any extra spaces beyond ...
What is the iBeacon Bluetooth Profile
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For an iBeacon with ProximityUUID E2C56DB5-DFFB-48D2-B060-D0F5A71096E0, major 0, minor 0, and ...