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Difference between Divide and Conquer Algo and Dynamic Programming
...ult of each sub-problem is stored in a table ( generally implemented as an array or a hash table) for future references. These sub-solutions may be used to obtain the original solution and the technique of storing the sub-problem solutions is known as memoization.
You may think of DP = recursion + ...
How do you check “if not null” with Eloquent?
...lly here 'and' does nothing but it would do if first parameter would be an array. Here is the method prototype : public function where($column, $operator = null, $value = null, $boolean = 'and'); and location - ".....\vendor\laravel\framework\src\Illuminate\Database\Query\Builder.php"
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Is there a way to select sibling nodes?
...//codepen.io/anon/pen/LLoyrP?editors=1011
Get the parent's children as an array, filter out this element.
Edit:
And to filter out text nodes (Thanks pmrotule):
var siblings = n => [...n.parentElement.children].filter(c=>c.nodeType == 1 && c!=n)
...
Better way to get type of a Javascript variable?
... The regex would also need to include numbers for things like Uint8Array. Instead, consider the more general match(/\s([^\]]+)/) which should handle anything.
– Lily Finley
Jan 19 '15 at 22:43
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Using NumberPicker Widget with Strings
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NumberPicker numberPicker = new NumberPicker(this);
String[] arrayString= new String[]{"hakuna","matata","timon","and","pumba"};
numberPicker.setMinValue(0);
numberPicker.setMaxValue(arrayString.length-1);
numberPicker.setFormatter(new NumberPicker.Formatter() {
@Override
public S...
How to capitalize the first letter in a String in Ruby
...is not relevant at all - there is nothing that prevents upcase returing an array, say ['I', 'İ'] for 'i'.upcase, and letting the caller decide which capitalization is relevant in a given situation. Currently the Ruby's handling of conversion between upper- and lowercase is broken, and that's it.
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What is java interface equivalent in Ruby?
...ded to. This is very useful in unit tests, where you can simply pass in an Array or a String instead of a more complicated Logger, even though Array and Logger do not share an explicit interface apart from the fact that they both have a method called <<.
Another example is StringIO, which impl...
MySQL query to get column names?
I'd like to get all of a mysql table's col names into an array in php?
21 Answers
21
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How to iterate over arguments in a Bash script
..., then you sometimes need non-standard
tools to assist. (Or you should use arrays, carefully: "${array[@]}" behaves analogously to "$@".)
Example:
$ mkdir "my dir" anotherdir
$ ls
anotherdir my dir
$ cp /dev/null "my dir/my file"
$ cp /dev/null "anotherdir/myfile"
$ ls...
What's the difference between equal?, eql?, ===, and ==?
...qual.
"koan" != "discursive thought" # Output: => true
Note that two arrays with the same elements in a different order are not equal, uppercase and lowercase versions of the same letter are not equal and so on.
When comparing numbers of different types (e.g., integer and float), if their nu...