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Adding days to $Date in PHP
...
From PHP 5.2 on you can use modify with a DateTime object:
http://php.net/manual/en/datetime.modify.php
$Date1 = '2010-09-17';
$date = new DateTime($Date1);
$date->modify('+1 day');
$Date2 = $date->format('Y-m-d');
Be careful when adding month...
Seedable JavaScript random number generator
... returns in range [start, end): including start, excluding end
// can't modulu nextInt because of weak randomness in lower bits
var rangeSize = end - start;
var randomUnder1 = this.nextInt() / this.m;
return start + Math.floor(randomUnder1 * rangeSize);
}
RNG.prototype.choice = functio...
程序员之网络安全系列（四）：数据加密之非对称秘钥 - 更多技术 - 清泛网 -...
...钥，然后让隔壁的王叔叔帮忙交换公开秘钥。
YA=a^XA mod p=5^36 mod 97=50
YB=a^XB mod p=5^58 mod 97=44
明明和丽丽交换了公开密钥之后，计算共享密钥如下：
明明：K=(YB) ^XA mod p=44^36 mod 97=75
丽丽：K=(YA) ^XB mod p=50^58 mod...
那些微信公众大号是如何赚钱的？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...粉丝的需求和建议下开的，主要根据粉丝的需求设计定制服装、饰品等，淘宝店更新信息都会放入公众号文章中。
微信公众号界的明星大号“石榴婆报告”也是在一次偶然中发现公众号的商业价值。运营者程艳曾在文末推送一...
Use RSA private key to generate public key?
...ey:
RSAPrivateKey ::= SEQUENCE {
version Version,
modulus INTEGER, -- n
publicExponent INTEGER, -- e
privateExponent INTEGER, -- d
prime1 INTEGER, -- p
prime2 INTEGER, -- q
exponent1 INTEGER, --...
Can I invoke an instance method on a Ruby module without including it?
I have a module which declares a number of instance methods
10 Answers
10
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Go build: “Cannot find package” (even though GOPATH is set)
...tch directories with package names, you really need to migrate to using Go modules instead of using GOPATH. New users who encounter this problem may be confused about the mentions of using GOPATH (as was I), which are now outdated. So, I will try to clear up this issue and provide guidance associate...
Git status ignore line endings / identical files / windows & linux environment / dropbox / mled
...-settings is one of the following:
text
binary (files that Git should not modify line endings for - as this can cause some image types such as PNGs not to render in a browser)
The text value can be configured further to instruct Git on how to handle line endings for matching files:
text - Changes...
Python: Best way to add to sys.path relative to the current running script
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Create a wrapper module project/bin/lib, which contains this:
import sys, os
sys.path.insert(0, os.path.join(
os.path.dirname(os.path.dirname(os.path.realpath(__file__))), 'lib'))
import mylib
del sys.path[0], sys, os
Then you can r...
How to convert milliseconds into human readable form?
...0
minutes=(A/(1000*60))%60
hours=(A/(1000*60*60))%24
and so on (% is the modulus operator).
Hope this helps.
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