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How can I validate a string to only allow alphanumeric characters in it?
How can I validate a string using Regular Expressions to only allow alphanumeric characters in it?
10 Answers
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Find duplicate lines in a file and count how many time each line was duplicated?
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This is what I do however algorithmically this is doesnt seem to be the most efficient approach (O(n log n)*avg_line_len where n is number of lines). I'm working on files that are several gigabytes large, so performance is a key issue. I wonder whether there is ...
Differences between Ant and Maven [closed]
...here you want the resulting bytecode to be stored, and how to package this all into a JAR file. While there are some recent developments that help make Ant less procedural, a developer's experience with Ant is in coding a procedural language written in XML.
Contrast the previous Ant example with a ...
android.view.InflateException: Binary XML file line #12: Error inflating class
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The inflate exception is not actually the problem, but really comes from another deeper issue in your layout that is then wrapped in an InflateException.
A common issue is an out of memory exception when trying to inflate an imageview loading a drawable reso...
Where are iOS simulator screenshots stored?
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For me, there's nothing in that folder. It's all on the Desktop. Not sure why? :/
– chakrit
Feb 9 '12 at 6:21
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Merge 2 arrays of objects
..."lang", value: "German"}];
function mergeByProperty(arr1, arr2, prop) {
_.each(arr2, function(arr2obj) {
var arr1obj = _.find(arr1, function(arr1obj) {
return arr1obj[prop] === arr2obj[prop];
});
arr1obj ? _.extend(arr1obj, arr2obj) : arr1.push(arr2obj);
});
}
mergeByPropert...
Match everything except for specified strings
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Depends on the language, but there are generally negative-assertions you can put in like so:
(?!red|green|blue)
(Thanks for the syntax fix, the above is valid Java and Perl, YMMV)
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Find and Replace text in the entire table using a MySQL query
Usually I use manual find to replace text in a MySQL database using phpmyadmin. I'm tired of it now, how can I run a query to find and replace a text with new text in the entire table in phpmyadmin?
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How does StartCoroutine / yield return pattern really work in Unity?
...rocesses, like gameplay triggers, that do nothing most frames, but occasionally are called upon to do critical work. And you’ve got assorted processes between the two.
Whenever you’re creating a process that will take place over multiple frames – without multithreading – you need to fin...
Best way to specify whitespace in a String.Split operation
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If you just call:
string[] ssize = myStr.Split(null); //Or myStr.Split()
or:
string[] ssize = myStr.Split(new char[0]);
then white-space is assumed to be the splitting character. From the string.Split(char[]) method's documentation page...