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How to determine an interface{} value's “real” type?
...the type in next time.
var data map[string]interface {}
...
for k, v := range data {
fmt.Printf("pair:%s\t%s\n", k, v)
switch t := v.(type) {
case int:
fmt.Printf("Integer: %v\n", t)
case float64:
fmt.Printf("Float64: %v\n", t)
case string:
fmt.Prin...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
... what it is good for - formatting data into a string. C++ provides a wide range of containers and an ostringstram is amongst the least appropriate for this purpose.
In the case of the vector and ostringstream you get protection from buffer overrun, you don't get that with a char array, and that pr...
How to link to specific line number on github
...number, and then copy and paste the link from the address bar. To select a range, click the number, and then shift click the later number.
Alternatively, the links are a relatively simple format, just append #L<number> to the end for that specific line number, using the link to the file. Here...
Appropriate datatype for holding percent values?
What is the best datatype for holding percent values ranging from 0.00% to 100.00%?
5 Answers
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Piping buffer to external command in Vim
...current buffer to the stdin of an external command. From :help :w_c:
:[range]w[rite] [++opt] !{cmd}
Execute {cmd} with [range] lines as standard input (note the space in front of the '!'). {cmd} is executed like with ":!{cmd}", any '!' is replaced with the previous command |:!|.
A relate...
How can I determine whether a 2D Point is within a Polygon?
... also it doesn't work well with very small polygons with side in the 0.01f range
– Patrick from NDepend team
Jan 21 at 6:45
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Once upon a time, when > was faster than < … Wait, what?
... a specific old optimization where one frame you would use GL_LESS with a range of [0, 0.5]. Next frame, you render with GL_GREATER with a range of [1.0, 0.5]. You go back and forth, literally "flipping the sign of Z and the depth test" every frame.
This loses one bit of depth precision, but you d...
What is the proper REST response code for a valid request but an empty data?
...uld be used when the user gets the resource. Empty is not a resource. 400 range is for client errors 500 range is for server errors In short: Your reasoning is off.
– Derk-Jan
Feb 10 '16 at 8:33
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What is the reason behind cbegin/cend?
...ion to this problem: std::as_const. Well, at least it's elegant when using range-based for:
for(auto &item : std::as_const(vec))
This simply returns a const& to the object it is provided.
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Int to Char in C#
...Int value to the corresponding Char in Utf16, given that the Int is in the range of valid values?
3 Answers
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