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Java SecurityException: signer information does not match
I recompiled my classes as usual, and suddenly got the following error message. Why? How can I fix it?
18 Answers
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Best way to convert text files between character sets?
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Stand-alone utility approach
iconv -f ISO-8859-1 -t UTF-8 in.txt > out.txt
-f ENCODING the encoding of the input
-t ENCODING the encoding of the output
You don't have to specify either of these arguments. They will de...
Why use the SQL Server 2008 geography data type?
I am redesigning a customer database and one of the new pieces of information I would like to store along with the standard address fields (Street, City, etc.) is the geographic location of the address. The only use case I have in mind is to allow users to map the coordinates on Google maps when th...
What to gitignore from the .idea folder?
I started using WebStorm for web development and am not sure what to add and what to exclude from our Git repository. Clearly some files inside the .idea folder are meant to be version controlled like the external library settings ( jsLibraryMappings.xml ) but others will probably change very ofte...
How to make the tab character 4 spaces instead of 8 spaces in nano?
...d idea to convert tabs to spaces.
Edit your ~/.nanorc file (or create it) and add:
set tabsize 4
set tabstospaces
If you already got a file with tabs and want to convert them to spaces i recommend the expandcommand (shell):
expand -4 input.py > output.py
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Is pass-by-value a reasonable default in C++11?
In traditional C++, passing by value into functions and methods is slow for large objects, and is generally frowned upon. Instead, C++ programmers tend to pass references around, which is faster, but which introduces all sorts of complicated questions around ownership and especially around memory ma...
CoffeeScript, When to use fat arrow (=>) over arrow (->) and vice versa
...ll the instance method be defined using the => ("fat arrow") operator and all the static methods being defined using the -> operator?
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What does Maven Update Project do in Eclipse?
...ava version, you will find that Eclipse will ask you to update the project and afterwards the configured Java runtime in the project will have changed to reflect what your Maven pom indicates.
That is an important thing to keep in mind: the Maven pom is the lead in this kind of project setup. If yo...
Check if a string is html or not
...se. If you use a < b && a > c the browser will turn the > and < characters into &gt; and &lt; entities appropriately. If, instead, you use a<b && a>c the browser will interpret the markup as a<b && a>c</b> because the lack of a space mean...
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps?
...://martijnthe.nl ) with my app whenever the app is installed on the phone, and with Mobile Safari in case it is not.
13 Ans...