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How to convert String to long in Java?
I got a simple question in Java: How can I convert a String that was obtained by Long.toString() to long ?
9 Answers
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Add column with number of days between dates in DataFrame pandas
... Nde - how exactly did it not work? Error or wrong values? Did you convert both A and B columns to datetime successfully?
– Ricky McMaster
Sep 24 '18 at 6:56
1
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MySQL and GROUP_CONCAT() maximum length
I'm using GROUP_CONCAT() in a MySQL query to convert multiple rows into a single string.
However, the maximum length of the result of this function is 1024 characters.
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How do I spool to a CSV formatted file using SQLPLUS?
...csv
select table_name, tablespace_name
from all_tables
where owner = 'SYS'
and tablespace_name is not null;
Output will be like:
TABLE_PRIVILEGE_MAP ,SYSTEM
SYSTEM_PRIVILEGE_MAP ,SYSTEM
STMT_AUDIT_OPTION_MAP ...
convert UIImage to NSData
...mage inside a UIImageView , e.g. "myImageView", you can do the following:
Convert your image using UIImageJPEGRepresentation() or UIImagePNGRepresentation() like this:
NSData *data = UIImagePNGRepresentation(myImageView.image);
//or
NSData *data = UIImageJPEGRepresentation(myImageView.image, 0.8);...
How to convert a factor to integer\numeric without loss of information?
When I convert a factor to a numeric or integer, I get the underlying level codes, not the values as numbers.
10 Answers
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How do I convert NSMutableArray to NSArray?
How do I convert NSMutableArray to NSArray in objective-c ?
9 Answers
9
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Convert RGB to RGBA over white
I have a hex color, e.g. #F4F8FB (or rgb(244, 248, 251) ) that I want converted into an as-transparent-as-possible rgba color (when displayed over white). Make sense? I'm looking for an algorithm, or at least idea of an algorithm for how to do so.
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StringBuilder vs String concatenation in toString() in Java
... StringBuilder optimization. I was using a decompiler and, some how, it is converting back to concat. +1
– bruno conde
Oct 7 '09 at 16:30
81
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Converting double to string
I am not sure it is me or what but I am having a problem converting a double to string.
14 Answers
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