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Remove background drawable programmatically in Android
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Try this
RelativeLayout relative = (RelativeLayout) findViewById(R.id.widget29);
relative.setBackgroundResource(0);
Check the setBackground functions in the RelativeLayout documentation
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What is hashCode used for? Is it unique?
I notice there is a getHashCode() method in every controls, items, in WP7, which return a sequence of number. Can I use this hashcode to identify an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specifi...
Calling filter returns [duplicate]
I am learning the concept of filters in Python. I am running a simple code like this.
2 Answers
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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...dent Lookup, describes how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqualified lookup (3.4.1) may be searched, and ...
How do I set ${user} in Eclipse to get the correct @author tag? [duplicate]
I am using Eclipse and every time code is created, @author is set to the value of ${user}.
Unfortunately,${user} seems to contain my windows login id.
Is there a way to override this through Eclipse?
I couldn't find the option.
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Writing a new line to file in PHP (line feed)
...gnized when you use '.
See the manual.
For the question of how to write line endings, see the note here. Basically, different operating systems have different conventions for line endings. Windows uses "\r\n", unix based operating systems use "\n". You should stick to one convention (I'd chose "\n...
Set value to NULL in MySQL
I want a value to be set to NULL if nothing is put into the text box in the form I'm submitting. How can I make this happen?
I've tried inserting 'NULL' but this just adds the word NULL into the field.
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Return HTTP status code 201 in flask
We're using Flask for one of our API's and I was just wondering if anyone knew how to return a HTTP response 201?
9 Answers...
Create boolean column in MySQL with false as default value?
I want to create a table in MySQL with a boolean column whose default value is false . But it's accepting NULL as default...
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What do column flags mean in MySQL Workbench?
In MySQL Workbench table editor there are 7 column flags available: PK, NN, UQ, BIN, UN, ZF, AI.
3 Answers
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