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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
...jar, jsse.jar, etc. When the JRE is packaged, these critical JAR files are compressed with Pack200 and stored as rt.pack, deploy.pack, jsse.pack, etc. The Java installer is supposed to uncompress them. If you are experiencing this error, apparently that didn't happen.
You need to manually run unpac...
List comprehension vs. lambda + filter
...It is strange how much beauty varies for different people. I find the list comprehension much clearer than filter+lambda, but use whichever you find easier.
There are two things that may slow down your use of filter.
The first is the function call overhead: as soon as you use a Python function (wh...
Floating point vs integer calculations on modern hardware
...
But MMX and SSE*/AVX2 integer instructions do compete for the same execution units, so using both at once is almost never useful. Just use the wider XMM / YMM versions to get more work done. Using SIMD integer and FP at the same time competes for the same registers, bu...
Where can I find the TypeScript version installed in Visual Studio?
...ave TypeScript installed for Visual Studio then:
Start the Visual Studio Command Prompt
Type tsc -v and hit Enter
Visual Studio 2017 versions 15.3 and above bind the TypeScript version to individual projects, as this answer points out:
Right click on the project node in Solution Explore...
Calculate RSA key fingerprint
...
Run the following command to retrieve the SHA256 fingerprint of your SSH key (-l means "list" instead of create a new key, -f means "filename"):
$ ssh-keygen -lf /path/to/ssh/key
So for example, on my machine the command I ran was (using RS...
RGB to hex and hex to RGB
...he RGB to hex conversion and add any required zero padding:
function componentToHex(c) {
var hex = c.toString(16);
return hex.length == 1 ? "0" + hex : hex;
}
function rgbToHex(r, g, b) {
return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
alert(rgbToHex(...
Why is Everyone Choosing JSON Over XML for jQuery? [closed]
...used as a mini database. I have seen XML used everywhere. I even see large companies switching over to JSON . Even Microsoft has integrated support for JSON. What is all the hype over JSON?
...
How to make a flat list out of list of lists?
...mes the sum of x for x from 1 to L excluded, i.e., I * (L**2)/2.
The list comprehension just generates one list, once, and copies each item over (from its original place of residence to the result list) also exactly once.
s...
One class per file rule in .NET? [closed]
...
community wiki
Mark
...
How to get IP address of the device from code?
...il to read IP and MAC addresses. Implementation is pure-java, but I have a comment block in getMACAddress() which could read the value from the special Linux(Android) file. I've run this code only on few devices and Emulator but let me know here if you find weird results.
// AndroidManifest.xml per...