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Check synchronously if file/directory exists in Node.js
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123
Looking at the source, there's a synchronous version of path.exists - path.existsSync. Looks ...
What's the best way to get the last element of an array without deleting it?
... = $array[count($array)-1]; || 123 | 300 | 137 | 139 | 143 | 140 | 144 || 312 | 218 | 48 | 53 | 45 | 47 | 51 || ...
What requirement was the tuple designed to solve?
...e/use a tuple in a very efficient and simple way:
var person = (Id:"123", Name:"john"); //create tuble with two items
Console.WriteLine($"{person.Id} name:{person.Name}") //access its fields
Returning more than one value from a method:
public (double sum, double average) ComputeSu...
How to pull request a wiki page on GitHub?
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123
GitHub doesn't support pull requests for the wiki repository, only the main repository (this i...
Git log to get commits only for a specific branch
...en there is no default & no pattern
| | defined.
| |
| * commit 80c123b9dbd1c1b3301ec1270adc6c07824aeb5c
| | Author: Mark Story <mark@mark-story.com>
| | Date: Sun Aug 28 22:35:20 2016 -0400
| |
| | Do fewer allocations for simple default values.
| |
| | Don't allocate arrays...
Paging in a Rest Collection
... example.com/cool.ajax" vs "cool article here: example.com/article.ajax#id=123".
– Richard Levasseur
Jun 4 '09 at 5:49
2
...
Effects of changing Django's SECRET_KEY
...ership]::GeneratePassword(50,5)
With Bash (source):
# tr includes ABCabc123 and the characters from OWASP's "Password special characters list"
cat /dev/urandom | tr -dc 'A-Za-z0-9!"#$%&\''()*+,-./:;<=>?@[\]^_`{|}~' | head -c 100 ; echo
At this point I thought why not try a larger key,...
What does “abstract over” mean?
... def add(a: Product, b: Product) = Product(a.value * b.value)
}
val sumOf123 = mapReduce(List(1,2,3), Sum)
val productOf456 = mapReduce(List(4,5,6), Product)
We have abstracted over monoids and foldables.
share
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App Inventor 2 SQLite 拓展:超流行兼容主流SQL语法的迷你本地数据库引擎...
...但TaifunSQLite是收费的,美刀。
.aix 拓展下载:
cn.fun123.SQLite.aix
中文网测试案例
.aia 测试源码下载:
TestSqlite.aia
打开数据库
一般可以在屏幕初始化时打开db。如果数据库已打开,则不...
Client-server synchronization pattern / algorithm?
... a user's name has changed then the delta can be something like {revision: 123, name: "John Doe"}
– dipole_moment
Jan 3 '17 at 17:23
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