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How to remove specific elements in a numpy array
...mpy as np
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9])
index = [2, 3, 6]
new_a = np.delete(a, index)
print(new_a) #Prints `[1, 2, 5, 6, 8, 9]`
Note that numpy.delete() returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new ob...
Base64 length calculation?
...
@techie_28: I make it 27308 characters for 20 * 1024 bytes, but I haven't had coffee yet this morning.
– Paul R
Jul 22 '16 at 6:21
...
Insert line after first match using sed
...
Alternatively, for portability, you can use perl instead:
perl -pi -e '$_ .= qq(CLIENTSCRIPT2="hello"\n) if /CLIENTSCRIPT=/' file
Or you could use ed or ex:
printf '%s\n' /CLIENTSCRIPT=/a 'CLIENTSCRIPT2="hello"' . w q | ex -s file
...
Correct approach to global logging in Golang
...)
return logger
}
func createLogger(fname string) *logger {
file, _ := os.OpenFile(fname, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0777)
return &logger{
filename: fname,
Logger: log.New(file, "My app Name ", log.Lshortfile),
}
}
You can use it in this way
package ...
How to make a in Bootstrap look like a normal link in nav-tabs?
... not good (e.g. if you use "$link-decoration: underline !default;" in your _variables.scss). This should be probably noted by developers - perhaps this is not what they wanted to achieve. The link should be styled COMPLETELY as a button.
– Dmitry Somov
Apr 27 '...
What are transparent comparators?
...en C only needs to be callable with arguments of type T and int (in either order), it doesn't need to be truly transparent. We used that name partly because we couldn't come up with a better name (I would have preferred is_polymorphic because such functors use static polymorphism, but there's alre...
Can Json.NET serialize / deserialize to / from a stream?
...JSON so the client could send {"sign in":{"username":"nick"}}{"buy item":{"_id":"32321123"}} and it needs to see this as two fragments of JSON signaling an event each time it reads a fragment. In nodejs this can be done in 3 lines of code.
– Nick Sotiros
Jun 2...
Is there a method to generate a UUID with go language
...
"crypto/rand"
"fmt"
)
// Note - NOT RFC4122 compliant
func pseudo_uuid() (uuid string) {
b := make([]byte, 16)
_, err := rand.Read(b)
if err != nil {
fmt.Println("Error: ", err)
return
}
uuid = fmt.Sprintf("%X-%X-%X-%X-%X", b[0:4], b[4:6], b[6:8], b[8:...
How to detect orientation change?
... the notification var in your callback,
// you can safely replace it with _
var didRotate: (Notification) -> Void = { notification in
switch UIDevice.current.orientation {
case .landscapeLeft, .landscapeRight:
print("landscape")
case .portrait, .portraitUp...
classical inheritance vs prototypal inheritance in javascript
...eritance. The confusing new operator and .prototype attribute are there in order to make the prototypal inheritance look like (pseudo-)classical inheritance.
Douglas Crockford explores this at length in his book, "JavaScript: The Good Parts".
...