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Using IQueryable with Linq
...standpoint, you may only return 2 records across the network instead of 20,000....
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Where do you store your salt strings?
...mplicated. some attackers may take the salt and hash and check only the 10,000 most common passwords. that way they will get a decent number of people. if, however, they dont have access to the salt, that is akin to the user having a longer more secure password. now, how likely is it that the salt d...
Canvas width and height in HTML5
...;
}
pre {
padding: 1em;
}
.slider {
width: 10px;
background: #000;
}
.right {
flex 1 1 auto;
}
<div class="frame">
<div class="left">
<canvas id="c"></canvas>
</div>
<div class="slider">
</div>
<div class="righ...
Is floating point math broken?
...tandard binary64 format, the representation can be written exactly as
0.1000000000000000055511151231257827021181583404541015625 in decimal, or
0x1.999999999999ap-4 in C99 hexfloat notation.
In contrast, the rational number 0.1, which is 1/10, can be written exactly as
0.1 in decimal, or
0x1.99...
Creating an API for mobile applications - Authentication and Authorization
...ing design
choices such as Spring Security.
So now that the view from 30,000ft is complete how do you go about doing it? Well, it's not that hard to create an authentication and authorisation system based on the listed technologies on the server side with a browser client. In combination with HTTP...
Is there a unique Android device ID?
...
String deviceId = deviceUuid.toString();
might result in something like: 00000000-54b3-e7c7-0000-000046bffd97
It works well enough for me.
As Richard mentions below, don't forget that you need permission to read the TelephonyManager properties, so add this to your manifest:
<uses-permission and...
Android: Want to set custom fonts for whole application not runtime
..._vertical"
android:text="text"
android:textColor="#000"
android:textSize="23sp"
custom:typeFace="metanormal"/>
and you can change the font progrmaticlly with setTypeFace method
also you can move the custom namespace to your parent layout if you wa...
When and why are database joins expensive?
...e performance, IME, is caching calculated values instead of reading the 10,000 rows required to calculate them.
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Using Java with Nvidia GPUs (CUDA)
...e improvements on the GPU are currently small (but for vectors of size 100.000 you may get a factor > 10 performance improvements). This is due to the small kernel sizes. This will improve in a future version.
The GPU implementation use JCuda and JOCL and are available for Nvidia and ATI GPUs.
...
How to get started with developing Internet Explorer extensions?
...serApp = Marshal.GenerateGuidForType(typeof(IWebBrowserApp)); // new Guid("0002DF05-0000-0000-C000-000000000046");
var guidIWebBrowser2 = Marshal.GenerateGuidForType(typeof(IWebBrowser2)); // new Guid("D30C1661-CDAF-11D0-8A3E-00C04FC9E26E");
IntPtr intPtr;
...