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How to use XPath contains() here?
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202
You are only looking at the first li child in the query you have instead of looking for any li...
Instance variable: self vs @
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264
Writing @age directly accesses the instance variable @age. Writing self.age tells the object t...
How to keep index when using pandas merge
...rge(b, how="left").set_index('index')
Out[5]:
col1 to_merge_on col2
index
a 1 1 1
b 2 3 2
c 3 4 NaN
Note that for some left merge operations, you may end up with more rows than in a when there are multiple matches between a...
how to permit an array with strong parameters
..._ids are passed to the create action in an array
"category_ids"=>["", "2"],
Therefore, when declaring strong parameters, I explicitly set category_ids to be an array
params.require(:question).permit(:question_details, :question_content, :user_id, :accepted_answer_id, :province_id, :city, :cat...
Difference between / and /* in servlet mapping url pattern
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271
<url-pattern>/*</url-pattern>
The /* on a servlet overrides all other servlets, in...
Proper way to rename solution (and directories) in Visual Studio
I have a rather involved Visual Studio solution (2010, but it shouldn't matter) that I need to rename.
18 Answers
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Difference between passing array and array pointer into function in C
...eters treated as though they were declared as pointers? Here's why:
6.3.2.1 Lvalues, arrays, and function designators
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3 Except when it is the operand of the sizeof operator or the unary & operator, or is a
string literal used to initialize an array, an expression that has type ‘‘array...
What does '
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238
It's a shorthand for <?php echo $a; ?>.
It's enabled by default since 5.4 regardless of...
How can I read a function's signature including default argument values?
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edited Nov 30 '17 at 12:17
answered Apr 20 '10 at 17:29
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