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Why are dates calculated from January 1st, 1970?
...
Do you know if Kernighan and Thompson every expressed a reason for choosing that moment beyond "It's a round number slightly before we started building the thing."?
– dmckee --- ex-moderator kitten
...
Objective-C: Property / instance variable in category
...nnot create a synthesized property in a Category in Objective-C, I do not know how to optimize the following code:
6 Answer...
Read text file into string array (and write)
...try to use the line reader directly in your project (especially if do not know how large the text file is!). But if the file is small, the following example might be sufficient for you:
package main
import (
"os"
"bufio"
"bytes"
"fmt"
)
// Read a whole file into the memory and sto...
How to create a fixed-size array of objects
...
The best you are going to be able to do for now is create an array with an initial count repeating nil:
var sprites = [SKSpriteNode?](count: 64, repeatedValue: nil)
You can then fill in whatever values you want.
In Swift 3.0 :
var sprites = [SKSpriteNode?](repea...
Select first row in each GROUP BY group?
...ndex-only scans is in development for Postgres 14. See here and here.)
For now, there are faster query techniques to substitute for this. In particular if you have a separate table holding unique customers, which is the typical use case. But also if you don't:
Optimize GROUP BY query to retrieve la...
How do I check in JavaScript if a value exists at a certain array index?
...e
if (i >= 0 && i < array.length) {
// it is in array
}
Now, under the hood, JavaScript engines almost certainly won't allocate array space linearly and contiguously like this, as it wouldn't make much sense in a dynamic language and it would be inefficient for certain code. They...
Get real path from URI, Android KitKat new storage access framework [duplicate]
..., so you suggest working with URIs instead of trying to get file path. But now with different URI format that will not work Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(uri, "video/*"); startActivity(intent);
– kamil zych
Dec 17 '13 at...
How do I ignore files in a directory in Git?
...he .gitignore file. When one of the two mentioned git commands is executed now, the directory will be (unexpectedly) lost.
mkdir test
cd test
git init
echo "/localdata/*" >.gitignore
git add .gitignore
git commit -m "Add .gitignore."
mkdir localdata
echo "Important data" >localdata/important...
How to set timeout for http.Get() requests in Golang?
... nil {
return nil, err
}
conn.SetDeadline(time.Now().Add(rwTimeout))
return conn, nil
}
}
func NewTimeoutClient(connectTimeout time.Duration, readWriteTimeout time.Duration) *http.Client {
return &http.Client{
Transport: &http.Transport{
...
Making a property deserialize but not serialize with json.net
...lization because there is no way for the GetSerializableMembers method to know if it's a read or write so you're excluding the properties for both. this solution does not work.
– Matt M
Mar 16 '18 at 14:41
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