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If string is empty then return some default value
... Firstly it is preffered because in my solution I should extend String, Fixnum and NilClass at least. And here I can just use clear code without bycles
– fl00r
Jan 27 '11 at 20:19
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Strip whitespace from jsp output
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Please, use the trim funcion, example
fn:trim(string1)
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Counting DISTINCT over multiple columns
... the columns, then get the distinct count of instances of the concatenated string.
SELECT count(DISTINCT concat(DocumentId, DocumentSessionId)) FROM DocumentOutputItems;
In MySQL you can do the same thing without the concatenation step as follows:
SELECT count(DISTINCT DocumentId, DocumentSessio...
HTTPURLConnection Doesn't Follow Redirect from HTTP to HTTPS
... which will follow the redirects.
URL resourceUrl, base, next;
Map<String, Integer> visited;
HttpURLConnection conn;
String location;
int times;
...
visited = new HashMap<>();
while (true)
{
times = visited.compute(url, (key, count) -> count == null ? 1 : cou...
How do I disable fail_on_empty_beans in Jackson?
...izationFeature.FAIL_ON_EMPTY_BEANS, false);
// do various things, perhaps:
String someJsonString = mapper.writeValueAsString(someClassInstance);
SomeClass someClassInstance = mapper.readValue(someJsonString, SomeClass.class)
The StackOverflow link below also has an example for a Spring project.
F...
How to encode the filename parameter of Content-Disposition header in HTTP?
...nt; filename=Na%C3%AFve%20file.txt
In ASP.Net I use the following code:
string contentDisposition;
if (Request.Browser.Browser == "IE" && (Request.Browser.Version == "7.0" || Request.Browser.Version == "8.0"))
contentDisposition = "attachment; filename=" + Uri.EscapeDataString(fileNam...
HTML form readonly SELECT tag/input
...eption (for example if we didn't handle this situation, and we expect one string and use 'Request.Form[FieldName]' command)
– M.i.T
Nov 17 '15 at 5:36
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Fluid width with equally spaced DIVs
...>
<span class="stretch"></span>
</div>
The extra span (.stretch) can be replaced with :after.
This still works in all the same browsers as the above solution. :after doesn't work in IE6/7, but they're using distribute-all-lines anyway, so it doesn't matter.
See: htt...
Safely limiting Ansible playbooks to a single machine?
...ok's hosts using a variable, then passing in a specific host address via --extra-vars:
# file: user.yml (playbook)
---
- hosts: '{{ target }}'
user: ...
Running the playbook:
ansible-playbook user.yml --extra-vars "target=imac-2.local"
If {{ target }} isn't defined, the playbook does nothin...
Should I make HTML Anchors with 'name' or 'id'?
...id be the <fragment> component of the URL.
If fragid is the empty string, then the indicated part of the document is the top of the document.
If there is an element in the DOM that has an ID exactly equal to fragid, then the first such element in tree order is the indicated part of the...