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What is a “cache-friendly” code?
...reases the number from 2 to N+1. Organizing a cache into more "ways" takes extra circuitry and generally runs slower, so (for example) an 8192-way set associative cache is rarely a good solution either.
Ultimately, this factor is more difficult to control in portable code though. Your control over w...
Default value in Go's method
...r chooses to use default values
// Both parameters are optional, use empty string for default value
func Concat1(a string, b int) string {
if a == "" {
a = "default-a"
}
if b == 0 {
b = 5
}
return fmt.Sprintf("%s%d", a, b)
}
**Option 2:** A single optional parameter at the end
/...
Default implementation for Object.GetHashCode()
...already been added into a dictionary, reference equality is perfect. With strings, as you note, one is usually more interested in whether a string containing the same sequence of characters has already been added. That's why string overrides GetHashCode. On the other hand, suppose you want to kee...
Why does “_” (underscore) match “-” (hyphen)?
...
I had a similar issue with space and hyphens while matching strings with exact match:
SELECT id FROM location WHERE name = 'IND - HQ';
The above query didn't return any records in MySQL. I had to escape the spaces and hyphens and use LIKE instead of exact match with equals (=) as f...
Add new field to every document in a MongoDB collection
...le, I would like to have new_field to be an int equal to the length of the string in test field.
– qed
Jan 17 '18 at 9:42
|
show 5 more comm...
How do I get an object's unqualified (short) class name?
... if mis-used (protected methods becoming public, etc.). You can use simple string replacement on PHP magic constants instead: str_replace(__NAMESPACE__ . '\\', '', __CLASS__);. It's also much faster, performance-wise.
– Franklin P Strube
Nov 11 '15 at 23:24
...
Defining custom attrs
...olor/my_color", "@layout/my_layout")
color
boolean
dimension
float
integer
string
fraction
enum - normally implicitly defined
flag - normally implicitly defined
You can set the format to multiple types by using |, e.g., format="reference|color".
enum attributes can be defined as follows:
<att...
How to elegantly ignore some return values of a MATLAB function?
... You can turn the warning off. End the line with this comment string %#ok Mlint will then ignore this. No warnings.
– user85109
Apr 25 '09 at 0:35
add a commen...
LINQ query on a DataTable
...
VB Version needs to insert (Of String) between myRow.Field and ("RowNo"). That part should read: myRow.Field(Of String)("RowNo") = 1 - Reference @Cros comment.
– yougotiger
Jun 18 '12 at 22:26
...
C# Float expression: strange behavior when casting the result float to int
...With this class you can really visualize the value of a floating number as string. Double and float are both floating numbers, decimal is not (it is a fixed point number).
Sample
DoubleConverter.ToExactString((6.2f * 10))
// output 61.9999980926513671875
More Information
Jon Skeet's DoubleConv...