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Constructor overloading in Java - best practice
...onstructors as simple as possible, and the simplest way is that they only call this(...). That way you only need to check and handle the parameters once and only once.
public class Simple {
public Simple() {
this(null);
}
public Simple(Resource r) {
this(r, null);
...
Convert .pem to .crt and .key
...
Converting Using OpenSSL
These commands allow you to convert certificates and keys to different formats to make them compatible with specific types of servers or software.
Convert a DER file (.crt .cer .der) to PEM
openssl x509 -inform der -in certificate.cer -o...
How can I put a database under git (version control)?
... and version control that instead. This way it is a flat text file.
Personally I suggest that you keep both a data dump, and a schema dump. This way using diff it becomes fairly easy to see what changed in the schema from revision to revision.
If you are making big changes, you should have a secon...
JavaScript hard refresh of current page
...aScript?
Hard refresh means getting a fresh copy of the page AND refresh all the external resources (images, JavaScript, CSS, etc.).
...
A JRE or JDK must be available in order to run Eclipse. No JVM was found after searching the followi
...st nailed down the root cause on my own Windows machine. The GlassFish installer complained with exactly the same error message and after digging in GlassFish forums, the cause was clear: a corrupt JRE install on a Windows machine. My JRE came along with the JDK and the Java 6 JDK installer didn't i...
pdftk compression option
...ad for more details). Both reduced the size of my uncompressed PDF dramatically.
Pixelated (lossy):
convert input.pdf -compress Zip output.pdf
Unpixelated (lossless, but may display slightly differently):
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -d...
Understanding the transclude option of directive definition?
...
Consider a directive called myDirective in an element, and that element is enclosing some other content, let's say:
<div my-directive>
<button>some button</button>
<a href="#">and a link</a>
</div>
If...
Do I encode ampersands in ?
I'm writing code that automatically generates HTML, and I want it to encode things properly.
4 Answers
...
WCF service startup error “This collection already contains an address with scheme http”
...n containing a WCF service contract and a Silverlight control which makes calls to that WCF service. On my development and test servers it works great.
...
URL matrix parameters vs. query parameters
...tp://example.com/res/categories;name=foo/objects;name=green/?page=1
It really comes down to namespacing.
Note: The 'levels' of resources here are categories and objects.
If only query parameters were used for a multi-level URL, you would end up with
http://example.com/res?categories_name=foo&...