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Java regex capturing groups indexes
...group in the pattern start indexing from 1. The indices are defined by the order of the opening parentheses of the capturing groups. As an example, here are all 5 capturing groups in the below pattern:
(group)(?:non-capturing-group)(g(?:ro|u)p( (nested)inside)(another)group)(?=assertion)
| | ...
Test or check if sheet exists
...
You don't need error handling in order to accomplish this. All you have to do is iterate over all of the Worksheets and check if the specified name exists:
For i = 1 To Worksheets.Count
If Worksheets(i).Name = "MySheet" Then
exists = True
En...
Predicate in Java
...es.filter
Returns the elements that satisfy a predicate.
On higher-order function
Predicate allows Iterables.filter to serve as what is called a higher-order function. On its own, this offers many advantages. Take the List<Integer> numbers example above. Suppose we want to test if all...
Is there any reason to use a synchronous XMLHttpRequest?
... This suits the majority of development needs where the desire is to have ordered, non-blocking events that enable the browsers to retain responsiveness for the user (good UX).
As stated in the Mozilla docs there are cases where you have to use synchronous requests; however, also listed is a workar...
How to access array elements in a Django template?
... # method call
foo[bar] # list-index lookup
It tries them in this order until it finds a match. So foo.3 will get you your list index because your object isn't a dict with 3 as a key, doesn't have an attribute named 3, and doesn't have a method named 3.
...
How to store arrays in MySQL?
...the key.". An array does too much. It has multiple facts and it stores the order (which is not related to the relation itself). And the performance is poor (see above).
Imagine that you have a person table and you have a table with phone calls by people. Now you could make each person row have a li...
How to find issues that at some point has been assigned to you?
...
and what about ordering by last time I worked on it ?
– sashok_bg
May 2 '16 at 13:01
1
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How to strip all whitespace from string
...ner,
Mongolian vowel separator,
zero-width non-breaking space (a.k.a. byte order mark),
...etc. See the full list here, under "Related Unicode characters without White_Space property".
So these 6 characters are covered by the list in the second regex, \u180B|\u200B|\u200C|\u200D|\u2060|\uFEFF.
Sour...
Convert HTML + CSS to PDF [closed]
...he solution seems to be HTML2PDF. DOMPDF did a terrible job with tables, borders and even moderately complex layout and htmldoc seems reasonably robust but is almost completely CSS-ignorant and I don't want to go back to doing HTML layout without CSS just for that program.
HTML2PDF looked the most...
Why is using “for…in” for array iteration a bad idea?
...er inherited properties, a thing that sometimes is not desired.
Also, the order of iteration is not guaranteed by the spec., meaning that if you want to "iterate" an array object, with this statement you cannot be sure that the properties (array indexes) will be visited in the numeric order.
For e...