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How to check if a string contains only digits in Java [duplicate]
...ves you the actual result: \d
References:
Java Regular Expressions
Java Character Escape Sequences
Edit: due to some confusion in other answers, I am writing a test case and will explain some more things in detail.
Firstly, if you are in doubt about the correctness of this solution (or other...
SQL: How to properly check if a record exists
...
It's better to use either of the following:
-- Method 1.
SELECT 1
FROM table_name
WHERE unique_key = value;
-- Method 2.
SELECT COUNT(1)
FROM table_name
WHERE unique_key = value;
The first alternative should give you no result or one result, the second count should be zero or on...
How do I limit the number of rows returned by an Oracle query after ordering?
...Oracle in this answer).
To answer the original question, here's the query:
SELECT *
FROM sometable
ORDER BY name
OFFSET 20 ROWS FETCH NEXT 10 ROWS ONLY;
(For earlier Oracle versions, please refer to other answers in this question)
Examples:
Following examples were quoted from linked page, in th...
XML Schema minOccurs / maxOccurs default values
...ml>
<body>
<xsl:for-each select="country">
<xsl:value-of select="countryName"/><br/>
<xsl:value-of select="capital"/><br/>
<xsl:value-of select="nation...
What is context in _.each(list, iterator, [context])?
...e" or sooner:
_.filter(words, lt, "e");
// find all words with 3 or more chars:
_.filter(words, pluck, 2);
Even from the limited examples, you can see how powerful an "extra argument" can be for creating re-usable code. Instead of making a different callback function for each situation, you can...
Replace Line Breaks in a String C#
...to replace that particular environments implementation of new line control characters.
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jquery IDs with spaces
Does anyone know how to select an item in the DOM by ID with jQuery, when that ID has a space?
11 Answers
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Make EditText ReadOnly
...of your editText pressing your editText for a few hundred milliseconds and selecting Paste option unless system clipboard is empty. I tested it with newest available API which is 23.
– patryk.beza
Mar 31 '16 at 12:05
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How to split a delimited string into an array in awk?
...
@WhiteWind: another way to "ensure" that | is seen as a char and not a special symbol is to put it between [] : ie, split($0, a, "[|]") # I like this better than '\|', in some cases, especially as some variant of regexp (perl vs grep vs .. others?) can have "|" interepreted l...
How to set timeout on python's socket recv method?
...
The typical approach is to use select() to wait until data is available or until the timeout occurs. Only call recv() when data is actually available. To be safe, we also set the socket to non-blocking mode to guarantee that recv() will never block indef...