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How to grep a text file which contains some binary data?
...
You could run the data file through cat -v, e.g
$ cat -v tmp/test.log | grep re
line1 re ^@^M
line3 re^M
which could be then further post-processed to remove the junk; this is most analogous to your query about using tr for the task.
...
Is it possible to get all arguments of a function as single object inside that function?
... an array-like object (not an actual array). Example function...
function testArguments () // <-- notice no arguments specified
{
console.log(arguments); // outputs the arguments to the console
var htmlOutput = "";
for (var i=0; i < arguments.length; i++) {
htmlOutput += '...
How to override equals method in Java
...lasses.
There is no need for the class to provide a “logical equality” test. For example, java.util.regex.Pattern could have overridden equals to check whether two Pattern instances represented exactly the same regular expression, but the designers didn’t think that clients would need or want ...
How do I force Postgres to use a particular index?
... a particular query plan for all time.
As a very blunt hammer, useful for testing, you can use the enable_seqscan and enable_indexscan parameters. See:
Examining index usage
enable_ parameters
These are not suitable for ongoing production use. If you have issues with query plan choice, you shou...
How can I list ALL DNS records?
...$2"; shift 2 ;;
*) break ;;
esac; done
DOM="$1"; shift
TYPE="${1:-any}"
test "${NS:-}" || NS=$(dig +short SOA "$DOM" | awk '{print $1}')
test "$NS" && NS="@$NS"
if test "$EXTENDED"; then
dig +nocmd $NS "$DOM" +noall +answer "$TYPE"
wild_ips=$(dig +short "$NS" "*.$DOM" "$TYPE" | tr '...
Copy to clipboard in Node.js?
...
Shortest way in Windows:
const util = require("util");
require('child_process').spawn('clip').stdin.end(util.inspect("content_for_the_clipboard"));
sha...
Generic method multiple (OR) type constraint
...ible. You can, however, define overloads for specific types:
public void test(string a, string arg);
public void test(string a, Exception arg);
If those are part of a generic class, they will be preferred over the generic version of the method.
...
ng-repeat :filter by single field
...FooCtrl', function($scope) {
$scope.products = [
{ id: 1, name: 'test', color: 'red' },
{ id: 2, name: 'bob', color: 'blue' }
/*... etc... */
];
});
<div ng-repeat="product in products | filter: { color: 'red' }">
This can of course be passed in by variable, as ...
Batch equivalent of Bash backticks
...scripts with the for /f command:
for /f "usebackq tokens=*" %%a in (`echo Test`) do my_command %%a
Yeah, it's kinda non-obvious (to say the least), but it's what's there.
See for /? for the gory details.
Sidenote: I thought that to use "echo" inside the backticks in a "for /f" command would nee...
How do I inspect the view hierarchy in iOS?
...ing properly contained in its parent. Currently I have to add asserts that test these various conditions by hand, or set different background colours on different views, and as you can imagine, that's a really tedious way to go about it.
...