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What is the difference between single and double quotes in SQL?
... For example: PRODUCT.id would be more readable as product_id, so you use either of the following:
SELECT PRODUCT.id AS product_id
SELECT PRODUCT.id 'product_id'
Either works in Oracle, SQL Server, MySQL… but I know some have said that the TOAD IDE seems to give some grief when using the singl...
Linux - Replacing spaces in the file names
...n a folder, and I want to replace every space character in all file names with underscores. How can I achieve this?
11 Answ...
String contains - ignore case [duplicate]
Is it possible to determine if a String str1="ABCDEFGHIJKLMNOP" contains a string pattern strptrn="gHi" ? I wanted to know if that's possible when the characters are case insensitive. If so, how?
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sqlalchemy flush() and get inserted id?
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Your sample code should have worked as it is. SQLAlchemy should be providing a value for f.id, assuming its an autogenerating primary-key column. Primary-key attributes are populated immediately within the flush() process as they are generated, and no call to com...
Set folder browser dialog start location
Is there any way to set the initial directory of a folder browser dialog to a non-special folder? This is what I'm currently using
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How do I update all my CPAN modules to their latest versions?
...cpanmin.us | perl - App::cpanminus
And then install cpan-outdated along with all other CPAN modules using cpanm:
cpanm App::cpanoutdated
BTW: If you are using perlbrew then you will need to repeat this for every Perl you have installed under it.
You can find out more about cpanminus and cpan-o...
How to add double quotes to a string that is inside a variable?
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You need to escape them by doubling them (verbatim string literal):
string str = @"""How to add doublequotes""";
Or with a normal string literal you escape them with a \:
string str = "\"How to add doublequotes\"";
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Cannot find module cv2 when using OpenCV
...nt of Raspbian) on a Raspberry Pi, using jayrambhia's script found here . It installed version 2.4.5.
17 Answers
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Convert a list of data frames into one data frame
I have code that at one place ends up with a list of data frames which I really want to convert to a single big data frame.
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What to add for the update portion in ConcurrentDictionary AddOrUpdate
I am trying to re-write some code using Dictionary to use ConcurrentDictionary. I have reviewed some examples but I am still having trouble implementing the AddOrUpdate function. This is the original code:
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