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How to set Oracle's Java as the default Java in Ubuntu?
How do I change the value of JAVA_HOME in Ubuntu to point to Oracle's Java?
8 Answers
...
find vs find_by vs where
...d are usually replaced with things like this:
Model.all
Model.first
find_by is used as a helper when you're searching for information within a column, and it maps to such with naming conventions. For instance, if you have a column named name in your database, you'd use the following syntax:
Mod...
Why {} + {} is NaN only on the client side? Why not in Node.js?
...eAPI && inspectedWindow.console) {
inspectedWindow.console._commandLineAPI = new CommandLineAPI(this._commandLineAPIImpl, isEvalOnCallFrame ? object : null);
expression = "with ((window && window.console && window.console._commandLineAPI) || {}) {\n" + express...
Bash empty array expansion with `set -u`
...4.4.
$ bash --version | head -n 1
GNU bash, version 4.4.19(1)-release (x86_64-pc-linux-gnu)
$ set -u
$ arr=()
$ echo "foo: '${arr[@]}'"
foo: ''
There is a conditional you can use inline to achieve what you want in older versions: Use ${arr[@]+"${arr[@]}"} instead of "${arr[@]}".
$ function ...
stopPropagation vs. stopImmediatePropagation
....js"></script>
<p>example</p>
Note that the order of the event binding is important here!
$("p").click(function(event) {
// This function will now trigger
$(this).css("background-color", "#f00");
});
$("p").click(function(event) {
event.stopImmediateP...
What is the 'pythonic' equivalent to the 'fold' function from functional programming?
...duce with non-associative operators is considered bad style.
Using higher-order functions is quite pythonic; it makes good use of Python's principle that everything is an object, including functions and classes. You are right that lambdas are frowned upon by some Pythonistas, but mostly because the...
Dictionary returning a default value if the key does not exist [duplicate]
...ithDefault<TKey, TValue> : Dictionary<TKey, TValue>
{
TValue _default;
public TValue DefaultValue {
get { return _default; }
set { _default = value; }
}
public DictionaryWithDefault() : base() { }
public DictionaryWithDefault(TValue defaultValue) : base() {
_default...
How to list all tags along with the full message in git?
...ould be helpful here. Am I missing something?
– still_dreaming_1
Sep 23 '14 at 15:03
2
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How can I match a string with a regex in Bash?
...n the comment above, We need to store the regex on a var
The variable BASH_REMATCH is set after you match the expression, and ${BASH_REMATCH[n]} will match the nth group wrapped in parentheses ie in the following ${BASH_REMATCH[1]} = "compressed" and ${BASH_REMATCH[2]} = ".gz"
if [[ "compressed.gz...
Printing 1 to 1000 without loop or conditionals
... @Joseph - The constructor one shouldn't be affected by what order the individual objects are initiated, but it is a good question.
– Chris Lutz
Jan 3 '11 at 2:40
12
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