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How to create default value for function argument in Clojure
... s 10))
([s base] (Integer/parseInt s base)))
Note that assuming false and nil are both considered non-values, (if (nil? base) 10 base) could be shortened to (if base base 10), or further to (or base 10).
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Is there a RegExp.escape function in Javascript?
...he function linked above is insufficient. It fails to escape ^ or $ (start and end of string), or -, which in a character group is used for ranges.
Use this function:
function escapeRegex(string) {
return string.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
}
While it may seem unnecessary a...
How to extract the substring between two markers?
Let's say I have a string 'gfgfdAAA1234ZZZuijjk' and I want to extract just the '1234' part.
18 Answers
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List all sequences in a Postgres db 8.1 with SQL
...mmunity wiki
2 revs, 2 users 92%Anand Chitipothu
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How can I easily view the contents of a datatable or dataview in the immediate window
Sometimes I will be at a breakpoint in my code and I want to view the contents of a DataTable variable (or a DataTable in a DataSet ). The quick watch doesn't give you a very clear view of the contents. How can I view them easily?
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Vim search and replace selected text
Let's say we have a text, and I enter visual mode and select some text. How do I quickly do a search for the highlighted text and replace it with something else?
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string to string array conversion in java
...ff on your assignment, String.split splits strings on a regular expression and this expression may be an empty string:
String[] ary = "abc".split("");
Yields the array:
(java.lang.String[]) [, a, b, c]
Getting rid of the empty 1st entry is left as an exercise for the reader :-)
Note: In Java 8, th...
What is the simplest way to convert a Java string from all caps (words separated by underscores) to
...figure there must be at least one way to do it using String.replaceAll() and a regex.
19 Answers
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How to replace part of string by position?
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The easiest way to add and remove ranges in a string is to use the StringBuilder.
var theString = "ABCDEFGHIJ";
var aStringBuilder = new StringBuilder(theString);
aStringBuilder.Remove(3, 2);
aStringBuilder.Insert(3, "ZX");
theString = aStringBuil...
Find region from within an EC2 instance
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This is to be run inside the EC2 instance and is powered by AWS's backends. It will not work anywhere else (essentially because that IP is an APIPA). Also there is no way to get this information directly from inside the instance without connecting to a metadata sourc...