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Setting Windows PowerShell environment variables
...ays to make environment settings permanent, but
if you are only using them from PowerShell, it's probably
a lot better to use your profile to initiate the
settings. On startup, PowerShell will run any .ps1
files it finds in the WindowsPowerShell directory under
My Documents folder. Typically you hav...
How to determine if a number is a prime with regex?
... can, which is bad in this case because it prevents the backreference part from working.)
The next part is the backreference: That same set of characters (two or more), appearing again. Said backreference appears one or more times.
So. The captured group corresponds to a natural number of characte...
Scalar vs. primitive data type - are they the same thing?
... I was taught (a very long time ago in school) that the term was derived from 'scalar processor' in contrast to a 'vector processor'. A scalar processor is a CPU that can only handle one piece of data at a time. These processors were/are named after the arithmetic terms. Interestingly enough, when...
How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
...1.2.jar together. This is wrong. You're basically mixing JSTL 1.2 API+impl from Oracle with JSTL 1.1 impl from Apache. You need to remove any standard-xxx.jar. Just only the jstl-1.2.jar is sufficient.
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl<...
Easiest way to check for an index or a key in an array?
... tests only for existence [of parameter]
This answer is actually adapted from the answers for this SO question: How to tell if a string is not defined in a bash shell script?
A wrapper function:
exists(){
if [ "$2" != in ]; then
echo "Incorrect usage."
echo "Correct usage: exists {k...
What are the differences between “=” and “
...ion). In fact, ?Syntax in R gives the following operator precedence table, from highest to lowest:
…
‘-> ->>’ rightwards assignment
‘<- <<-’ assignment (right to left)
‘=’ assignment (right to left)
…
But is this the only diff...
Pass variables to Ruby script via command line
... variables and have only logical true/false values.
You can access values from environment variables:
> FIRST_NAME='Andy Warhol' ruby -e 'puts ENV["FIRST_NAME"]'
> Andy Warhol
Drawbacks are present here to, you have to set all the variables before the script invocation (only for your ruby ...
How do I clone a generic List in Java?
...
Not really a clone though, is it? From the API docs "There are no guarantees on the type, mutability, serializability, or thread-safety of the List returned". Euw, don't want one of those. toCollection may be a better choice.
– Tom Hawti...
Activity has leaked ServiceConnection @438030a8 that was original
...
You haven't provided any of your code from LightFactoryRemote, so this is only a presumption, but it looks like the kind of problem you'd be seeing if you were using the bindService method on it's own.
To ensure a service is kept running, even after the activity...
Exposing database IDs - security risk?
...cular manager's department.
There are schemes to hide the real identifier from an end user (e.g., map between the real identifier and a temporary, user-specific identifier on the server), but I would argue that this is a form of security by obscurity. I want to focus on keeping real cryptographic s...