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How to design a multi-user ajax web application to be concurrently safe
... page that shows a large amount of data from the server. The communication is done via ajax.
8 Answers
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SQL how to make null values come last when sorting ascending
...dingly by the datetime field, however I want rows where the datetime field is null at the end of the list, not at the beginning.
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Use JNI instead of JNA to call native code?
... change something in it, then you need to call another method which uses this byte buffer. This would require you to copy this buffer from c to java, then copy it back from java to c. In this case jni will win in performance because you can keep and modify this buffer in c, without copying.
These ...
Go build: “Cannot find package” (even though GOPATH is set)
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It does not work because your foobar.go source file is not in a directory called foobar. go build and go install try to match directories, not source files.
Set $GOPATH to a valid directory, e.g. export GOPATH="$HOME/go"
Move foobar.go to $GOPATH/src/foobar/foobar.go and bui...
Select last row in MySQL
...ment in there
If you want the last of all the rows in the table, then this is finally the time where MAX(id) is the right answer! Kind of:
SELECT fields FROM table ORDER BY id DESC LIMIT 1;
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How do I check if there are duplicates in a flat list?
For example, given the list ['one', 'two', 'one'] , the algorithm should return True , whereas given ['one', 'two', 'three'] it should return False .
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Intellij IDEA Java classes not auto compiling on save
...ources if we are using the external compiler option. The only thing needed is to check the option "Build project automatically", located under "Compiler" settings:
Also, if you would like to hot deploy, while the application is running or if you are using spring boot devtools you should enable th...
How to use permission_required decorators on django class-based views
...m having a bit of trouble understanding how the new CBVs work. My question is this, I need to require login in all the views, and in some of them, specific permissions. In function-based views I do that with @permission_required() and the login_required attribute in the view, but I don't know how to...
How to check if object property exists with a variable holding the property name?
I am checking for the existence of an object property with a variable holding the property name in question.
6 Answers
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Shorten string without cutting words in JavaScript
...r the lazy dog" to, say, 6 characters without cutting off any word).
If this is the case, you can try something like the following:
var yourString = "The quick brown fox jumps over the lazy dog"; //replace with your string.
var maxLength = 6 // maximum number of characters to extract
//Trim and r...