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Objective-C declared @property attributes (nonatomic, copy, strong, weak)
...ail when I must use each attribute: nonatomic , copy , strong , weak , and so on, for a declared property, and explain what each does? Some sort of example would be great also. I am using ARC.
...
How to parse unix timestamp to time.Time
...estamps. Instead you can use strconv.ParseInt to parse the string to int64 and create the timestamp with time.Unix:
package main
import (
"fmt"
"time"
"strconv"
)
func main() {
i, err := strconv.ParseInt("1405544146", 10, 64)
if err != nil {
panic(err)
}
tm := ...
Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
I am working with the pandas library and I want to add two new columns to a dataframe df with n columns (n > 0).
These new columns result from the application of a function to one of the columns in the dataframe.
...
Easiest way to rename a model using Django/South?
I've been hunting for an answer to this on South's site, Google, and SO, but couldn't find a simple way to do this.
4 Answ...
JavaScript: Class.method vs. Class.prototype.method
...ill be available to all the object instances created with the new keyword, and the context within that function (the this keyword) will refer to the actual object instance where you call it.
Consider this example:
// constructor function
function MyClass () {
var privateVariable; // private memb...
What is the exact meaning of Git Bash?
...I know now the basic operations such as commit , push , pull , fetch , and merge . But I still don't know what Git Bash itself actually is!
...
How to return a file using Web API?
...t, because as soon as the variable goes out of scope, .NET will dispose it and you'll get error messages about the underlying connection being closed.
– Brandon Montgomery
Sep 26 '12 at 21:44
...
Django's SuspiciousOperation Invalid HTTP_HOST header
... It is just connecting using the IP address not the domain name and the IP address is not in the ALLOWED_HOSTS - or at least that is what was happening with me - I could repro it by point my browser to the IP address.
– markmnl
May 17 '14 at 2:38
...
What's the difference between “Write-Host”, “Write-Output”, or “[console]::WriteLine”?
...y what Write-Host is doing behind the scenes.
Run this demonstration code and examine the result.
function Test-Output {
Write-Output "Hello World"
}
function Test-Output2 {
Write-Host "Hello World" -foreground Green
}
function Receive-Output {
process { Write-Host $_ -foreground Ye...
Margin-Top not working for span element?
...erties specify the width of the margin area of a box. The
'margin' shorthand property sets the margin for all four sides while
the other margin properties only set their respective side. These
properties apply to all elements, but vertical margins will not have
any effect on non-replaced inl...