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Protect .NET code from reverse engineering?
...increase the price of the for-pay edition, so that in the end instead of 2,000 users at $20 each you have 100,000 free users, of which 500 are willing to pay $99 for the "professional" edition. This earns you more money than if you spent a bunch of time locking up your product. More than that, you c...
NOT IN vs NOT EXISTS
... example there the number of logical reads increase from around 400 to 500,000.
Additionally the fact that a single NULL can reduce the row count to zero makes cardinality estimation very difficult. If SQL Server assumes that this will happen but in fact there were no NULL rows in the data the rest...
Microsoft CDN for jQuery or Google CDN? [closed]
...
It's not an assumption. Sites in the Alexa top 200,000 using Google's CDN outnumber Microsoft's over 100:1. In terms of popularity for caching, the only point in favor of the MS jQuery CDN is that Microsoft.com uses it, which gives it a lot of exposure from that one referenc...
How to add one day to a date? [duplicate]
...
Date today = new Date();
Date tomorrow = new Date(today.getTime() + (1000 * 60 * 60 * 24));
Date has a constructor using the milliseconds since the UNIX-epoch. the getTime()-method gives you that value. So adding the milliseconds for a day, does the trick. If you want to do such manipulations...
Is there a library function for Root mean square error (RMSE) in python?
... calculating root mean squared error in python:
import numpy as np
d = [0.000, 0.166, 0.333] #ideal target distances, these can be all zeros.
p = [0.000, 0.254, 0.998] #your performance goes here
print("d is: " + str(["%.8f" % elem for elem in d]))
print("p is: " + str(["%.8f" % elem for elem ...
filter for complete cases in data.frame using dplyr (case-wise deletion)
...81002 2.377807 2.420615 2.3467519 5.223077 20
# filter 1.000000 1.000000 1.000000 1.0000000 1.000000 20
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Parse large JSON file in Nodejs
...ient. It will also be extremely fast. A quick test showed I processed 10,000 rows in under 15ms.
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return query based on date
...ause javascript's .getTime() returns milliseconds you need to mulitply by 1000 before you use it as input to the new Date() constructor.
db.things.find({
createdAt: {
$gte: new Date(new Date().getTime()-60*5*1000).toISOString()
}
})
.count()
Explanation for ...
How do you use colspan and rowspan in HTML tables?
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I'd suggest:
table {
empty-cells: show;
border: 1px solid #000;
}
table td,
table th {
min-width: 2em;
min-height: 2em;
border: 1px solid #000;
}
<table>
<thead>
<tr>
<th rowspan="2"></th>
<...
在 App Inventor 2 中使用图像 · App Inventor 2 中文网
...辨率图像加载到应用程序媒体中的，每个图像的大小为 1000 像素 × 1000 像素。每个这样的图像需要 1000×1000 = 100 万像素或 1000×1000×4 = 4 兆字节，整个网格需要 26×4 = 104 兆字节。运行中的应用程序可用的典型内存量范围从 20 到 50...