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How do I calculate tables size in Oracle
Being used to (and potentially spoiled by) MSSQL, I'm wondering how I can get at tables size in Oracle 10g.
I have googled it so I'm now aware that I may not have as easy an option as sp_spaceused. Still the potential answers I got are most of the time outdated or don't work. Probably because I'm no...
How does a hash table work?
I'm looking for an explanation of how a hash table works - in plain English for a simpleton like me!
15 Answers
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Is there a “previous sibling” selector?
The plus sign ( + ) is for the next sibling.
17 Answers
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How to avoid annoying error “declared and not used”
I'm learning Go but I feel it is a bit annoying that when compiling, I should not leave any variable or package unused.
8 ...
Is there a CSS selector by class prefix?
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It's not doable with CSS2.1, but it is possible with CSS3 attribute substring-matching selectors (which are supported in IE7+):
div[class^="status-"], div[class*=" status-"]
Notice the space character in the second attribute selector....
test a file upload using rspec - rails
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You can use fixture_file_upload method to test file uploading:
Put your test file in "{Rails.root}/spec/fixtures/files" directory
before :each do
@file = fixture_file_upload('files/test_lic.xml', 'text/xml')
end
it "can upload a license" do
post :uploadLicense, :upload => @fi...
Why am I getting 'Assembly '*.dll' must be strong signed in order to be marked as a prerequisite.'?
... trying to compile my excel addin using C# 4.0, and started to get this problem when building my project in Visual Studio. It's important to tell you that I haven't had this problem before. What could cause this to happen?
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How to use GROUP BY to concatenate strings in SQL Server?
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No CURSOR, WHILE loop, or User-Defined Function needed.
Just need to be creative with FOR XML and PATH.
[Note: This solution only works on SQL 2005 and later. Original question didn't specify the version in use.]
CREATE TABLE #YourTable ([ID] INT, [Name] CHAR(1), [Value] INT)
INSERT INTO #Y...
Can Java 8 code be compiled to run on Java 7 JVM?
Java 8 introduces important new language features such as lambda expressions.
5 Answers
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Facebook Post Link Image
...eone posts a link on facebook, a script usually scans that link for any images, and displays a quick thumbnail next to the post. For certain URLs though (including mine), FB doesn't seem to pick up anything, despite their being a number of images on that page.
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