我想的变体show(我们称之为label),其行为就像show,只是它不换行StringS IN " "或CharS IN ' '.例子:
> label 5
"5"
> label "hello"
"hello"
> label 'c'
"c"
我尝试手动实现这个,但我碰到了一些墙.这是我尝试过的:
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE UndecidableInstances #-}
module Label where
class (Show a) => Label a where
label :: a -> String
instance Label [Char] where
label str = str
instance Label Char where
label c = [c]
-- Default case
instance Show a => Label a …我见过一些在线漂亮的打印模块代码.有人知道将多维数组格式化为可读显示吗？
例如,翻译这个:
array(83){[0] => array(2){["name"] => string(11)"CE2 Options"["type"] => string(5)"title"} [1] => array(1){["type"] => string(4)"open"} [2] => array(5){["name"] => string(8)"Template"["desc"] = > string(638)"test description"["id"] => string(9)"my_theme"["type"] => string(14)"selectTemplate"["options"] => array(13){
进入这...
array(83) {
[0]=> array(2) { ["name"]=> string(11) "My Options" ["type"]=> string(5) "title" }
[1]=> array(1) { ["type"]=> string(4) "open" }
[2]=> array(5) {
["name"]=> string(8) "Template"
["desc"]=> string(638) "Test description"
["id"]=> string(9) "my_theme"
["type"]=> string(14) "selectTemplate"
["options"]=> array(13) {
[0]=> string(10) "test"
我从几种XML格式转换为一种标准.我的XSL看起来如下:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:output method="xml" encoding="UTF-8" indent="yes" omit-xml-declaration="yes"/>
<xsl:template match="list | store">
<list>
<xsl:for-each select="item | product | product-store">
<item>
<name>
<xsl:choose>
<xsl:when test="name"><xsl:value-of select="substring-before(name, ' ')" /></xsl:when>
<xsl:otherwise><xsl:value-of select="name | title" /></xsl:otherwise>
</xsl:choose>
</name>
<desc>
<xsl:choose>
<xsl:when test="name"><xsl:value-of select="substring-after(name, ' ')" /></xsl:when>
<xsl:otherwise><xsl:value-of select="desc" /></xsl:otherwise>
</xsl:choose>
</desc>
<nr><xsl:value-of select="index | number" /></nr>
</item>
</xsl:for-each>
</list>
</xsl:template>
</xsl:stylesheet>
我的示例XML是
<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
<?xml-stylesheet type="text/xsl" href="transform.xsl"?>
<list>
<item>
<index>1362242627</index>
<name>test 22</name>
</item>
<item>
<index>2362625609</index>
<name>test …我正在尝试缩进pprint的输出，以便使用pprint获得8个空格的缩进。我使用的代码是：
import numpy as np
from pprint import pprint
A = np.array([1, 2, 3, 4])
f = open("log.txt", 'w')
n = 2
for i in range(n):
A = A + 1
f.writelines(list(u' \u27B3 - %s\n'.encode('utf-8') % i for i in A))
pprint(globals())
输出量
import numpy as np
from pprint import pprint
A = np.array([1, 2, 3, 4])
f = open("log.txt", 'w')
n = 2
for i in range(n):
A = A + 1
f.writelines(list(u' \u27B3 - %s\n'.encode('utf-8') % i for …有没有办法在mac上从命令行打印HTML或XML字符串？试着用Ruby做到这一点.有任何想法吗？我已经考虑过XSLT,以及编写自己的解析器,但这些都非常复杂.寻找已经存在的东西.
str = ""
for i in range(1,91):
str = str + '-'
print "+", '{:^90}'.format(str), "+"
for elem in cursor:
print "|", '{:^8}'.format(elem['classid']), \
"|", '{:^8}'.format(elem['dept']), \
"|", '{:^8}'.format(elem['coursenum']), \
"|", '{:^8}'.format(elem['area']), \
"|", '{:<46}'.format(elem['title']), \
"|"
print "+", '{:^90}'.format(str), "+"
我有以下代码来尝试打印出db查询的结果.在独立文件中,它打印以下输出:
+ ------------------------------------------------------------------------------------------ +
| centered | centered | centered | centered | 12 |
| centered | centered | centered | centered | 12 |
| centered | centered | centered | centered | 12 |
+ ------------------------------------------------------------------------------------------ …我正在使用Jackson 1.9.6(codehaus)在Spring MVC应用程序中对我的响应主体进行JSON序列化,而我却无法找到配置漂亮打印的方法.我能够找到的所有代码示例(比如this和this)都涉及到ObjectMapper或者实例化ObjectWriter,但我目前还没有使用其他任何实例化.我甚至不知道在哪里放这个代码.我所有的Jackson配置都是通过注释序列化为JSON的POJO来处理的.
有没有办法在注释中指定漂亮的打印？我认为他们会把它放在@JsonSerialize中,但它看起来不像.
我要序列化的类看起来像这样:
@JsonAutoDetect
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
public class JSONObject implements Serializable{...}
我的Spring控制器方法如下所示:
@RequestMapping(method = RequestMethod.GET)
public @ResponseBody List<Object> getMessagesAndUpdates(HttpServletRequest request, HttpServletResponse response) {
JSONObject jsonResponse = new JSONObject();
.
.
.
//this will generate a non-pretty-printed json response. I want it to be pretty-printed.
return jsonResponse;
}
PrettyPrint很棒,但我遇到了以下问题.
我有一个像那样打印的结构:
{ 'table': { 'tr': [ { 'tr': { 'td': [ {'td': 'Period'},
{'td': 'G-A:B '},
{'td': 'SA -A:B '},
{'td': 'PIM-A:B '},
{'td': 'PP-A:B '},
{'td': 'SH-A:B'}]}},
{ 'tr': { 'td': [ {'td': '1'},
{'td': '2:2'},
{'td': '14:10'},
{'td': '4:8'},
{'td': '1:1'},
{'td': '0:0'}]}},
{ 'tr': { 'td': [ {'td': '2'},
{'td': '2:2'},
{'td': '13:11'},
{'td': '37:27'},
{'td': '0:0'},
{'td': '0:0'}]}},
{ 'tr': { 'td': [ {'td': '3'},
{'td': '0:1'},
{'td': '11:13'},
{'td': '0:8'},
{'td': '0:0'},
{'td': '0:0'}]}}, …我需要在ASP.NET Web API应用程序中添加和处理可选的"漂亮"参数.当用户发送"pretty = true"时,应用程序响应应该看起来像带有缩进的人类可读的json.当用户发送"pretty = false"或根本不发送此参数时,他必须得到没有空格符号的json作为响应.
这就是我所拥有的: Global.asax.cs
public class WebApiApplication
: HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
}
}
WebApiConfig.cs
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Filters.Add(new ValidateModelAttribute());
config.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore,
Formatting = Newtonsoft.Json.Formatting.Indented
};
config.Formatters.JsonFormatter.SerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
...
如您所知,我需要在Register方法中使用这样的逻辑:
config.Formatters.JsonFormatter.SerializerSettings = new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore,
Formatting = Newtonsoft.Json.Formatting.Indented
};
if(prettyPrint) // must be extracted from request and passed here somehow
{ …我Data.Yaml用来以人类可读的格式存储一些数据.但是,数据的某些部分是数字列表或矩阵.YAML输出,块序列样式,非常详细:
- - 1
- 2
- 3
- - 4
- 5
相反,我希望这些部分以流程序列样式进行编码,就像
[[1,2,3],[4,5]]
有办法怎么做？
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