manual

How to get Getopt::Long + pod2usage working?

由 僤鯓⒐⒋嵵緔 提交于 2019-12-11 02:48:37
问题 I'm about to go nuts so here I am :) I'm trying to make documentation for my Perl program, but I never manage to get Getopt::Long and pod2man working. Here is a simple program I wrote for testing purpose: #!/usr/bin/perl use strict; use warnings; use Getopt::Long; use Pod::Usage; Getopt::Long::Configure ("bundling"); my $option = ""; my $verbose = 1; my $quiet = 0; my $man = 0; my $help = 0; GetOptions ( "option=s" => \$option, "verbose" => sub { $verbose = 1; $quiet = 0 }, "quiet|noverbose"

Why does this Excel formula work?

由 你说的曾经没有我的故事 提交于 2019-12-11 02:03:42
问题 In this answer the following formula is given. {=PERCENTILE(IF(COLUMN(INDIRECT("1:"&MAX(Data!N3:N15)))<=Data!N3:N15,Data!M3:M15,""),0.25)} It is supposed to calculate the first quartile of data with weights. I've been trying to understand what this formula says, but I can't. First of all, what are the curly brackets? (Probably a silly question.) Second, what does the <= operator do when it's given two data ranges as operands? Thrid, how can this possibly give the right answer, if, regardless

Magento - Cannot add products to a manual order within backend of the Admin Panel

由 为君一笑 提交于 2019-12-11 00:42:09
问题 I'm experiencing an issue where when I go to create an order within the Admin Panel of Magento (1.4.1.1) I can start the order, select the customer, then select the language, it loads all information fine, but when I go to "Add Products I can open that up and select the products, but when I click "Add Selected Product(s) to Order" it shows the loading screen briefly (Please Wait) then it loads nothing. I can add the items from the wishlist over, or the last ordered items, but not new products

Using Data Annotations Validation Manually and Object Graphs

由 牧云@^-^@ 提交于 2019-12-10 10:19:22
问题 Let's assume that I have two simple classes: public class CustomerDetails { [Required] public string Address { get; set; } } public class Customer { public Customer() { Details = new CustomerDetails(); } [Required] public string Name { get; set; } public CustomerDetails Details { get; private set; } } When I try to manually validate Customer class in a Console application in this way: var customer = new Customer() { Name = "Conrad" }; var context = new ValidationContext(customer, null, null);

Auto Layout + Manual Layout 混用

由 限于喜欢 提交于 2019-12-07 01:49:59
约束代码混用的问题 无数人趟过此坑，大部分人在坑中一蹶不振，小部分人爬起来也是跌跌撞撞。 有很多人都说auto layout和manual layout的坐标设置是不能混用的，会导致出现布局问题。首先声明一点，autolayout和manuallayout是可以混用的。用的时机很重要，auto layout和manual layout有各自的生命周期和作用域，区分他们两个的作用时间很关键，头脑中一定要清楚你所添加的每条约束，在什么时间场合，会造成什么后果。否则，布局就会和预想的不同，各种奇怪的布局问题也就接踵而至。 1)视图的生命周期顺序 我们在controller视图上面用auto layout添加了一个subview，并在各个系统调用声明周期方法中做了打印处理，结果如下： 其中前面带有“-”符号的表示的是subview视图的打印。 autolayout的作用范围是从上往下第三个方法-updateConstraints一直到viewDidLayoutSubviews,这期间，系统是通过view上的约束来计算view上的布局。而我们一般习惯将布局写在viewDidLoad里面，这就是我们为什么总是无法用manual layout的方法去修改我们的布局。 要想修改布局，必须要在autolayout结束之后才会起作用，否则会被系统将我们的布局按照autolayout重新刷新

错误：mysql foreign key errno 150

由 混江龙づ霸主 提交于 2019-12-05 15:28:51
Mysql错误： ERROR 1005 (HY000): Can't create table 'mytable.#sql-191_1c5e4' (errno: 150) alter table message_demo add cons traint foreign key(type) references message_type(id) on delete cascade; 原因是message_demo表的type（外键）属性和message_type表的id（主键）定义不同，由于我是在建立表之后再建立的外键关系，之前给type字段加了个unsigned，而id字段又没加，因此报错。 参考： http://forums.devarticles.com/mysql-development-50/mysql-foreign-key-problem-errno-150t-7704.html Finally. I found out what the problem was. It wasn't about the definition of the foreign key. actually it was the definition of the primary key field. 好久不使用外键，对级联操作都有点不记得了。 以下资料来自官方文档（MySQL 5.1

Java : “xx”.equals(variable) better than variable.equals(“xx”) , TRUE?

由 浪子不回头ぞ 提交于 2019-12-05 10:59:31
问题 I'm reviewing a manual of best practices and recommendation coding java I think is doubtful. Recomendation: String variable; "xx".equals(variable) // OK variable.equals("xx") //Not recomended Because prevents appearance of NullPointerException that are not controlled Is this true? 回答1: This is a very common technique that causes the test to return false if the variable is null instead of throwing a NullPointerException . But I guess I'll be different and say that I wouldn't regard this as a

Manual binding in Cocoa

由 流过昼夜 提交于 2019-12-04 16:06:47
I have an ImageView which shows a lock, informing if an opened file is locked or not. I have 2 images for locked and unlocked cases. I want synchronize the displayed image with boolean value of my object representing an opened file. To do this I want my ViewController to change the image in my ImageView depending on lock state of object. So both object and ViewController have a property "isLocked". How can I synchronize them? It is easy in IB but I don't know how to do it programmatically. I tried in initialize method of my ViewController to use: [ViewController bind:@"value" toObject:

How to disable autoload in jqGrid?

由 柔情痞子 提交于 2019-12-04 12:05:45
问题 How to disable autoload in jqGrid and load data manually when I need it? Thanks. 回答1: If you set datatype to 'local' the data from the server will be not loaded. To force the loading of data you can change datatype to 'json' or 'xml' with respect of setGridParam method (see http://www.trirand.com/jqgridwiki/doku.php?id=wiki:options and http://www.trirand.com/jqgridwiki/doku.php?id=wiki:methods#grid_related_methods) and then call trigger("reloadGrid") method. See jqGrid is not loading data

Polymer: manually submitting a form

由 拟墨画扇 提交于 2019-12-04 03:24:07
问题 In polymer I'm trying to manually submit a form. My form looks like this: <form id="myForm" on-submit="{{ submitForm }}"> <input class="text" value="{{ someValue}}"> <button type="submit">Submit</button> </form> And in the polymer object I have: submitForm: function(e) { e.preventDefault(); } Whenever I try to do the following: document.getElementById('myForm').submit(); the form totally ignores the on-submit attribute and posts the form to a new page. I'm building a on-screen keyboard for
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