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What's the best way to build a string of delimited items in Java?

...lar to the one you refer to in Ruby: StringUtils.join(java.lang.Iterable,char) Java 8: Java 8 provides joining out of the box via StringJoiner and String.join(). The snippets below show how you can use them: StringJoiner StringJoiner joiner = new StringJoiner(","); joiner.add("01").add("02")...
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How can I get a resource “Folder” from inside my jar File?

...nput Stream will have all the files name from that dir. After that you can concat the dir path with each file name and call getResourceAsStream for each file in a loop. share | improve this answer ...
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How much size “Null” value takes in SQL Server

... The following link claims that if the column is variable length, i.e. varchar then NULL takes 0 bytes (plus 1 byte is used to flag whether value is NULL or not): How does SQL Server really store NULL-s The above link, as well as the below link, claim that for fixed length columns, i.e. char(10...
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How to add additional fields to form before submit?

...orm = $(this).closest('form'); form = form.serializeArray(); form = form.concat([ {name: "customer_id", value: window.username}, {name: "post_action", value: "Update Information"} ]); $.post('/change-user-details', form, function(d) { if (d.error) { alert("There was a problem ...
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Java `final` method: what does it promise?

...lass. Reliability and Contract -- Objects are composed of primitives (int, char, double, etc.) and/or other Objects. Not all operations applicable to those components should be applicable or even logical when they are used in the bigger Object. Methods with the final modifier can be used to ensure t...
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alternatives to REPLACE on a text or ntext datatype

...g SQL Server 2005/2008, you can use the following code (taken from here): select cast(replace(cast(myntext as nvarchar(max)),'find','replace') as ntext) from myntexttable share | improve this answ...
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What is the point of Lookup?

...in those assemblies IEnumerable<Type> allTypes = sampleTypes.Select(t => t.Assembly) .SelectMany(a => a.GetTypes()); // Grouped by namespace, but indexable ILookup<string, Type> lookup = allTypes.ToLookup(t =&g...
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Why does C++11 not support designated initializer lists as C99? [closed]

...urmountable problems with this approach; given: struct X { int c; char a; float b; }; What order would these functions be called in in c99: struct X foo = {.a = (char)f(), .b = g(), .c = h()}? Surprisingly, in c99: The order of evaluation of the subexpressions in any initializer i...
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How to find out what type of a Mat object is with Mat::type() in OpenCV

...n" functionality like Visual Studio you can type cv::CV_8U right-click and select Go to Definition to open the file where cv::CV_8U is defined which is types_c.h. – user3731622 Aug 29 '16 at 17:53 ...
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Removing colors from output

...hould probably be (m|K) or [mK], because you're not trying to match a pipe character. But that's not important right now.) If you switch that final match in your command to [mGK] or (m|G|K), you should be able to catch that extra control sequence. ./somescript | sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{...