小编dat*_*789的帖子

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从javascript中的日期减去天数

我有一个JavaScript基本上返回2天前的日期.它如下:

var x;
var m_names = new Array("January", "February", "March", 
    "April", "May", "June", "July", "August", "September", 
    "October", "November", "December");

var d = new Date();
var twoDaysAgo = d.getDate()-2;  //change day here
var curr_month = d.getMonth();
var curr_year = d.getFullYear();
var x = twoDaysAgo + "-" + m_names[curr_month] + "-" + curr_year;

document.write(x);

假设今天是2012年12月12日,以上将返回2012年12月10日的日期.我不认为这会在我们进入新的月份时动态起作用,或者,将日期从-2更改为-15.它只能从本月3日开始工作.

我怎么能修改这个,所以当它是2012年12月12日今天,我希望它能在15天前将它更新给我,它应该是2012年11月27日......而不是2012年12月3日？

任何帮助赞赏.谢谢!我是一个Javascript新手.

我首选shell命令来完成任务.我有一个非常非常大的文件 - 大约2.8 GB,内容是JSON的内容.一切都在一条线上,我被告知那里至少有150万条记录.

我必须准备文件以供消费.每条记录必须独立.样品:

{"RomanCharacters":{"Alphabet":[{"RecordId":"1",...]},{"RecordId":"2",...},{"RecordId":"3",...},{"RecordId":"4",...},{"RecordId":"5",...} }}

或者,使用以下内容......

{"Accounts":{"Customer":[{"AccountHolderId":"9c585258-c94c-442b-a2f0-1ebbcc274795","Title":"Mrs","Forename":"Tina","Surname":"Wright","DateofBirth":"1988-01-01","Contact":[{"Contact_Info":"9168777943","TypeId":"Mobile Number","PrimaryFlag":"No","Index":"1","Superseded":"No" },{"Contact_Info":"9503588153","TypeId":"Home Telephone","PrimaryFlag":"Yes","Index":"2","Superseded":"Yes" },{"Contact_Info":"acne.pimple@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"No","Index":"3","Superseded":"No" },{"Contact_Info":"swati.singh@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"Yes","Index":"4","Superseded":"Yes" }, {"Contact_Info":"christian.bale@hollywood.com","TypeId":"Email Address","PrimaryFlag":"No","Index":"5","Superseded":"NO" },{"Contact_Info":"15482475584","TypeId":"Mobile_Phone","PrimaryFlag":"No","Index":"6","Superseded":"No" }],"Address":[{"AddressPtr":"5","Line1":"Flat No.14","Line2":"Surya Estate","Line3":"Baner","Line4":"Pune ","Line5":"new","Addres_City":"pune","Country":"India","PostCode":"AB100KP","PrimaryFlag":"No","Superseded":"No"},{"AddressPtr":"6","Line1":"A-602","Line2":"Viva Vadegiri","Line3":"Virar","Line4":"new","Line5":"banglow","Addres_City":"Mumbai","Country":"India","PostCode":"AB10V6T","PrimaryFlag":"Yes","Superseded":"Yes"}],"Account":[{"Field_A":"6884133655531279","Field_B":"887.07","Field_C":"A Loan Product",...,"FieldY_":"2015-09-18","Field_Z":"24275627"}]},{"AccountHolderId":"92a5788f-cd8f-423d-ae5f-4eb0ceb457fd","_Title":"Dr","_Forename":"Christopher","_Surname":"Carroll","_DateofBirth":"1977-02-02","Contact":[{"Contact_Info":"9168777943","TypeId":"Mobile Number","PrimaryFlag":"No","Index":"7","Superseded":"No" },{"Contact_Info":"9503588153","TypeId":"Home Telephone","PrimaryFlag":"Yes","Index":"8","Superseded":"Yes" },{"Contact_Info":"acne.pimple@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"No","Index":"9","Superseded":"No" },{"Contact_Info":"swati.singh@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"Yes","Index":"10","Superseded":"Yes" }],"Address":[{"AddressPtr":"11","Line1":"Flat No.14","Line2":"Surya Estate","Line3":"Baner","Line4":"Pune ","Line5":"new","Addres_City":"pune","Country":"India","PostCode":"AB11TXF","PrimaryFlag":"No","Superseded":"No"},{"AddressPtr":"12","Line1":"A-602","Line2":"Viva Vadegiri","Line3":"Virar","Line4":"new","Line5":"banglow","Addres_City":"Mumbai","Country":"India","PostCode":"AB11O8W","PrimaryFlag":"Yes","Superseded":"Yes"}],"Account":[{"Field_A":"4121879819185553","Field_B":"887.07","Field_C":"A Loan Product",...,"Field_X":"2015-09-18","Field_Z":"25679434"}]},{"AccountHolderId":"4aa10284-d9aa-4dc0-9652-70f01d22b19e","_Title":"Dr","_Forename":"Cheryl","_Surname":"Ortiz","_DateofBirth":"1977-03-03","Contact":[{"Contact_Info":"9168777943","TypeId":"Mobile Number","PrimaryFlag":"No","Index":"13","Superseded":"No" },{"Contact_Info":"9503588153","TypeId":"Home Telephone","PrimaryFlag":"Yes","Index":"14","Superseded":"Yes" },{"Contact_Info":"acne.pimple@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"No","Index":"15","Superseded":"No" },{"Contact_Info":"swati.singh@microchimerism.com","TypeId":"Email Address","PrimaryFlag":"Yes","Index":"16","Superseded":"Yes" }],"Address":[{"AddressPtr":"17","Line1":"Flat No.14","Line2":"Surya Estate","Line3":"Baner","Line4":"Pune ","Line5":"new","Addres_City":"pune","Country":"India","PostCode":"AB12SQR","PrimaryFlag":"No","Superseded":"No"},{"AddressPtr":"18","Line1":"A-602","Line2":"Viva Vadegiri","Line3":"Virar","Line4":"new","Line5":"banglow","Addres_City":"Mumbai","Country":"India","PostCode":"AB12BAQ","PrimaryFlag":"Yes","Superseded":"Yes"}],"Account":[{"Field_A":"3288214945919484","Field_B":"887.07","Field_C":"A Loan Product",...,"Field_Y":"2015-09-18","Field_Z":"66264768"}]}]}}

最终结果应该是:

{"RomanCharacters":{"Alphabet":[{"RecordId":"1",...]},
{"RecordId":"2",...},
{"RecordId":"3",...},
{"RecordId":"4",...},
{"RecordId":"5",...} }}

尝试的命令:

• sed -e 's/,{"RecordId"/}]},\n{"RecordId"/g' sample.dat
• awk '{gsub(",{\"RecordId\"",",\n{\"RecordId\"",$0); print $0}' sample.dat

尝试的命令对于小文件非常适用.但它不适用于我必须操作的2.8 GB文件.在没有任何理由的情况下,塞德在10分钟后中途退出,没有做任何事情.经过多个小时后,awk出现了分段错误(核心转储)的原因.我尝试了perl的搜索和替换,并收到错误消息"Out of memory".

任何帮助/想法都会很棒!

我的机器上的其他信息:

• 超过105 GB的磁盘空间. …

我有一个基本上评估 2 个十进制数的脚本。

if (( $(echo "$p $q" | awk '{ print ($1 < $2)}') )); then
   echo "Evaluation: Acceptable!"

q 是来自用户输入的小数或数字。
p 是计算出的数字。

因此，如果 p=1 且 q=2，则结果是可接受的。

问题#1
如果计算出的 p 为 -150，而 q=2，我们如何将其评估为不可接受的。基本上，如果 p 小于 0 或负值，结果应该是不可接受的。

问题#2
q 是一个范围：-q < 0 < q
示例：用户输入 q=0.01
可接受范围：-0.01 到 0.01
如果 p 在此范围内，则它是可接受的，否则不可接受。

有任何想法吗？

我知道 Notepad++ 中有一个相当强大的功能，您可以在整个文档中搜索特定字符串并计算其出现次数。这就是查找功能 (Ctrl+F) 中的全部内容。

例如数据：错误读取文件错误读取文件第 3 行错误错误读取文件第 5 行错误

查找和计数*：“行”= 2

I could not seem to find this* function in Geany. If there is already a plugin for this, please share it. Otherwise, please share on how would one do the same -- without switching to another editor.

在阅读了如何在Bash中初始化数组并看到博客中提出的一些基本示例之后,其实际应用仍存在一些不确定性.一个有趣的例子可能是按升序排序 - 按随机顺序列出从A到Z的国家/地区,每个字母一个.

但在现实世界中,Bash阵列是如何应用的？它适用于什么？数组的常见用例是什么？这是我希望熟悉的一个领域.任何使用bash数组的冠军？请提供你的例子.