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Why are these numbers not equal?
...ting-point Arithmetic," ACM Computing Surveys 23, 1 (1991-03), 5-48 doi>10.1145/103162.103163 (revision also available)
The Floating-Point Guide - What Every Programmer Should Know About Floating-Point Arithmetic
0.30000000000000004.com compares floating point arithmetic across programming langua...
Make a div fill up the remaining width
...this:
<style>
#divMain { width: 500px; }
#left-div { width: 100px; float: left; background-color: #fcc; }
#middle-div { margin-left: 100px; margin-right: 100px; background-color: #cfc; }
#right-div { width: 100px; float: right; background-color: #ccf; }
</style>
<div...
Get first day of week in SQL Server
...ome sensible logic built in to round up or down:
SELECT DATEDIFF(YEAR, '2010-01-01', '2011-12-31');
SELECT DATEDIFF(YEAR, '2010-12-31', '2011-01-01');
To answer how to get a Sunday:
If you want a Sunday, then pick a base date that's not a Monday but rather a Sunday. For example:
DECLARE @dt DAT...
undefined reference to `__android_log_print'
...
answered Dec 15 '10 at 23:29
Ryan ReevesRyan Reeves
9,76933 gold badges3939 silver badges2626 bronze badges
...
Why would you use an ivar?
...
100
Encapsulation
If the ivar is private, the other parts of the program can't get at it as easily...
mongodb/mongoose findMany - find all documents with IDs listed in array
...nd({
'_id': { $in: [
mongoose.Types.ObjectId('4ed3ede8844f0f351100000c'),
mongoose.Types.ObjectId('4ed3f117a844e0471100000d'),
mongoose.Types.ObjectId('4ed3f18132f50c491100000e')
]}
}, function(err, docs){
console.log(docs);
});
This method will work well even...
Delete files older than 15 days using PowerShell
...
10 Answers
10
Active
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How can I multiply and divide using only bit shifting and adding?
... want to decompose one of the numbers by powers of two, like so:
21 * 5 = 10101_2 * 101_2 (Initial step)
= 10101_2 * (1 * 2^2 + 0 * 2^1 + 1 * 2^0)
= 10101_2 * 2^2 + 10101_2 * 2^0
= 10101_2 << 2 + 10101_2 << 0 (Decomposed)
= 10101_2 * 4 + 1010...
What is the best way to prevent session hijacking?
...ijacking
– xorinzor
Dec 4 '12 at 17:10
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show 4 more comments
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联网 App 第 3 课：点击挑战排行榜，字典存成绩、破纪录才写回、按分数排序...
...
这一课学什么
准备
第一步：10 秒小游戏（这一课新增）
第二步：成绩表是一个字典
第三步：破纪录才写回
第四步：排出名次
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