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Associative arrays in Shell scripts
...up an item by the key. It only provides a way to find each key (and value) from a numeric index. (An item could be found by key by iterating through the array, but that is not what is desired for an associative array.)
– Eric Postpischil
Dec 22 '18 at 12:03
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Dynamic SQL - EXEC(@SQL) versus EXEC SP_EXECUTESQL(@SQL)
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EXEC('SELECT * FROM FOO WHERE ID=?', 123) will replace the parameter placeholder "?" with the value 123 and then execute the query, returning a result for SELECT * FROM FOO WHERE ID=123
– Peter Wone
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“Cannot evaluate expression because the code of the current method is optimized” in Visual Studio 20
...this issue when I was using VS 2010. My solution configuration has (Debug) selected. I resolved this by unchecking the Optimize Code property under project properties.
Project (right Click)=> Properties => Build (tab) => uncheck Optimize code
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UDP vs TCP, how much faster is it? [closed]
... for you.
On a larger scale, this TCP behavior is what keeps the Internet from locking up into "congestion collapse".
Things that tend to push applications towards UDP:
Group delivery semantics: it's possible to do reliable delivery to a group of people much more efficiently than TCP's point-to...
How to read attribute value from XmlNode in C#?
...= new XmlDocument();
//doc.Load(path);
doc.LoadXml(xml);
var names = doc.SelectNodes("//Employee/@name");
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How to render a PDF file in Android
... is very fast and easy to use, licensed under Apache License 2.0:
pdfView.fromAsset(String)
.pages(0, 2, 1, 3, 3, 3) // all pages are displayed by default
.enableSwipe(true)
.swipeHorizontal(false)
.enableDoubletap(true)
.defaultPage(0)
.onDraw(onDrawListener)
.onLoad(onLoadCompleteLi...
Undoing a commit in TortoiseSVN
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Go to Show Log Screen, select the revision that you want to undo, right click it and select Revert changes from this revision, this will do a reverse-merge.
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Rails 3 execute custom sql query without a model
...o_hash
From the docs:
result = ActiveRecord::Base.connection.exec_query('SELECT id, title, body FROM posts')
result # => #<ActiveRecord::Result:0xdeadbeef>
# Get the column names of the result:
result.columns
# => ["id", "title", "body"]
# Get the record values of the result:
result...
Check whether HTML element has scrollbars
... fails in many cases. If your element has overflow: visible; width: 200px; and has a child with a 500px width, your element has no scroll bars but has a scrollWidth of 500px and a clientWidth of 200px.
– Joseph Lennox
Mar 5 '14 at 21:17
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How to solve “Plugin execution not covered by lifecycle configuration” for Spring Data Maven Builds
...ors/Warnings > Plugin execution not covered by lifecycle configuration. Select Ignore / Warning / Error as you wish.
Also, in the quick fix (Ctrl + 1) for this error, it gives an option to
mark goal as ignored in Eclipse build in Eclipse preferences (experimental)
This is a cleaner way, as i...