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How to update attributes without validation
I've got a model with its validations, and I found out that I can't update an attribute without validating the object before.
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How do you get the length of a list in the JSF expression language?
...length attributes, they won't implement getSize() or getLength() which JSF and most other standards require, you can't do what you want.
There's a couple ways to do this.
One: add a function to your Bean that returns the length:
In class MyBean:
public int getSomelistLength() { return this.somel...
Shell - Write variable contents to a file
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Use the echo command:
var="text to append";
destdir=/some/directory/path/filename
if [ -f "$destdir" ]
then
echo "$var" > "$destdir"
fi
The if tests that $destdir represents a file.
The > appends the text after truncating the ...
What is http multipart request?
...tipart request is a HTTP request that HTTP clients construct to send files and data over to a HTTP Server. It is commonly used by browsers and HTTP clients to upload files to the server.
What it looks like
See Multipart Content-Type
See multipart/form-data
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How to hash a string into 8 digits?
Is there anyway that I can hash a random string into a 8 digit number without implementing any algorithms myself?
4 Answers...
Get all related Django model objects
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It doesn't show ManyToMany connections and was deprecated. In Django 1.8+ it's recommended to be replaced with _meta.get_fields(): docs.djangoproject.com/en/1.10/ref/models/meta/… (see reverse in the _get_fields() source also)
– int_ua
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Is there a VB.NET equivalent of C# out parameters?
...f you are translating VBScript to VB, you should make sure to set Explicit and Strict mode on. It will get you more error messages, but most will point to the source of problems (e.g. variable declared without type) rather than secondary problems (e.g. variable declared without type becomes Object, ...
Change File Extension Using C#
... I am not moving a file, i get file path from broswer like c:\..\..\a.jpg, and the file format on physical path is a.Jpeg, so when i try to delete it, it gives me error cannot find the file on specified path. so i am thinking it has some to do with the file extension is not matching. so i am trying ...
What's so great about Lisp? [closed]
...ng Lisp demonstrates developer enlightenment.
I've heard of 3 weaknesses (and their counter-arguments):
Dynamic typing.
There's an argument for statically typed languages out there revolving around giving the compiler enough information to catch a certain class of errors so they don't happen at...
How can we print line numbers to the log in java
...always return the line number of the return statement in the called method and not necessarily the line number of the method call.
– Ron Tuffin
Sep 22 '08 at 14:13
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