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What is the difference between
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Here's a good guide:
http://api.rubyonrails.org/classes/ActionView/Base.html
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Which SQL query is faster? Filter on Join criteria or Where clause?
...he semantics gets changed in case of Outer-join ? I get different results based on the position of the filter, but unable to understand why
– Ananth
Oct 18 '17 at 19:53
3
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Is there a way to loop through a table variable in TSQL without using a cursor?
...you should be absolutely sure you need to iterate through each row — set based operations will perform faster in every case I can think of and will normally use simpler code.
Depending on your data it may be possible to loop using just SELECT statements as shown below:
Declare @Id int
While (Se...
Namespace and class with the same name?
....cs file is annoying (to say the least).
You could solve it by making the base class a "partial class" and then, go on creating the inner classes on their own files (just remember that they'll have to declare the base class complement and then go on with the specific inner class for that file).
So...
Count rows with not empty value
...e cases as =A1<>"" seems to arrive at the correct truthy/falsy value based on how we intuitively think of blank cells, either virgin blanks or created blanks.
So imagine we have this data and we want the Count of non-blanks in B2:B6:
| | A | B | C |
|---|-------------...
What does void* mean and how to use it?
...ne commonly cited example is the library function qsort:
void qsort(void *base, size_t nmemb, size_t size,
int (*compar)(const void *, const void *));
base is the address of an array, nmemb is the number of elements in the array, size is the size of each element, and compar is a point...
How to set default values in Rails?
...g .allocate was about model objects loaded with existing data from the database. (And it's a terrible idea for ActiveRecord to work that way, IMO. But that's beside the point.)
– SFEley
Mar 10 '11 at 7:55
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Cross-thread operation not valid: Control accessed from a thread other than the thread it was create
...on properly.
Situation is this: I want to load data into a global variable based on the value of a control. I don't want to change the value of a control from the child thread. I'm not going to do it ever from a child thread.
So only accessing the value so that corresponding data can be fetched from...
Adding HTML entities using CSS content
...0 × 160). You will find that in the Unicode Code Charts and Character Database.
In CSS you need to use a Unicode escape sequence for such characters, which is based on the hexadecimal value of the code point of a character. So you need to write
.breadcrumbs a:before {
content: '\a0';
}
This w...
Matplotlib: draw grid lines behind other graph elements
...unclear how to apply andrew cooke's answer, so this is a complete solution based on that:
ax.set_axisbelow(True)
ax.yaxis.grid(color='gray', linestyle='dashed')
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