我想在按钮或标签的text属性中显示&字符,而不是键盘快捷键.
有没有办法做到这一点？
我最近购买了RealPython来了解Python和Web开发.但是,我遇到了一个障碍,我认为这是我机器上的Python配置问题.任何帮助都是非常有用的.
所以我有一个名为app.py的Flask文档,类似于RealPython的github app.py
# --- Flask Hello World ---#
# import the Flask class from the flask module
from flask import Flask
# create the application object
app = Flask(__name__)
# use decorators to link the function to a url
@app.route("/")
@app.route("/hello")
# define the view using a function, which returns a string
def hello_world():
return "Hello, World!"
# dynamic route
@app.route("/test/<search_query>")
def search(search_query):
return search_query
# dynamic route with an int type
@app.route("/integer/<int:value>")
def type(value):
print …我有一个oracle 10g PL/SQL程序,我正试图运行,
程序
set serveroutput on size 10000;
DECLARE
membership varchar2(1) :='Y';
shipping number(2,2);
quantity number(3) :=0;
BEGIN
if membership = 'Y' then
if quantity <= 3 then
shipping := 3.00;
elsif quantity > 3 and quantity <= 6 then
shipping := 5.00;
elsif quantity > 6 and quantity <= 10 then
shipping := 7.00;
elsif quantity > 10 then
shipping := 9.00;
end if;
elsif membership = 'N' then
if quantity <= 3 then
shipping := 5.00;
elsif …任何人都可以告诉我为什么这不会执行？
set serveroutput on ;
Declare
TYPE type_emp IS RECORD(
emp_name employees.last_name%TYPE,
emp_salary employees.salary%TYPE);
rec_emp type_emp;
due_for_a_raise CHAR(1);
begin
SELECT last_name, salary into rec_emp
from employees
where employee_id = 150;
if emp_salary > 5000 then
due_for_a_raise := 'Y';
else
due_for_a_raise := 'N';
end if;
dbms_output.putline(last_name);
dbms_output.putline(salary);
dbms_output.putline(due_for_a_raise);
end;
错误如下
Error report:
ORA-06550: line 11, column 6:
PLS-00201: identifier 'EMP_SALARY' must be declared
ORA-06550: line 11, column 3:
PL/SQL: Statement ignored
ORA-06550: line 16, column 23:
PLS-00201: identifier 'LAST_NAME' must be …出于某种原因,我无法克服这个错误.我已经完成了搜索,但找不到任何vb示例.这个web.config我做错了什么？
SalesTracking.svc
<%@ ServiceHost Language="VB" Debug="true" Service="SalesTracking.ISalesTracking" CodeBehind="SalesTracking.svc.vb" %>
SalesTracking.svc.vb
Imports GlobalDir
Imports System.Web.Script.Serialization
Imports System.Reflection
Imports System.Data.SqlClient
Imports System.Web.Configuration
Imports System.Threading
Imports System.ServiceModel.Activation
<AspNetCompatibilityRequirements(RequirementsMode:=AspNetCompatibilityRequirementsMode.Allowed)> _
Public Class WebService
Implements ISalesTracking
Public Function GetDataUsingDataContract(ByVal composite As ClientSideData) As ClientSideData Implements ISalesTracking.GetDataUsingDataContract
End Function
End Class
Web.config文件
<?xml version="1.0"?>
<configuration>
<appSettings/>
<connectionStrings>
<add name="dbconstring" connectionString="Data Source="" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>
<authentication mode="Windows" />
<authorization>
<allow roles="Domain Users" />
<deny users="*" />
</authorization>
<customErrors mode="Off"/>
<compilation debug="true" strict="false" explicit="true" targetFramework="4.0" />
</system.web> …所以我知道使用php is_numeric函数会更容易,但我要做的是创建一个正则表达式,主要用于学习正则表达式,以测试测试分数.范围可以是0-100,但可以有2个小数位.这就是我到目前为止所做的工作.
if (preg_match("^([0-9]){2,3})(.[0-9]{2})?$([0-9]{1})?$", $quiz1))
{
echo "match";
}
else {
$error = true;
}
如果我正确地思考字面含义:
字符串的开头找到字符0-9,两个地方.可选的字符串十进制结束,并找到字符0-9,两个地方.可选的字符串结尾查找字符0-9,表示1个位置.
我有一小段代码,我试图通过ajax响应执行.我有ID传递,但由于某种原因我的删除语句失败(不删除记录,因此添加到$ err数组).我确定这是一个愚蠢的事情,但它现在并没有向我跳出来.
PHP代码
<?php
define('INCLUDE_CHECK',true);
require '../../connect.php';
require '../../functions.php';
// Those two files can be included only if INCLUDE_CHECK is defined
// sets site to require https
echo redirectToHTTPS();
session_name('tzLogin');
session_set_cookie_params(2*7*24*60*60);
session_start();
if (isset($_POST['id']) && $_SESSION['id'] && $_SESSION['permlvl']==3 )
{
$id = is_numeric($_POST['id']);
$err = array();
$query = "DELETE FROM employees WHERE id = :id";
$statement = $db -> prepare($query);
$statement -> BindParam('id', $id, PDO::PARAM_INT);
$result = $statement -> execute();
$statement -> closecursor();
if ($result === true){
}
else{
$err[] …当我执行这个PL/SQL块时,我一直收到"没有找到数据".如果我注释掉输出行,那么一切都按照我的怀疑输出,但更新语句永远不会执行.有任何想法吗？
set serveroutput on;
Declare
TYPE type_emp IS RECORD(
emp_salary emp.salary%TYPE);
rec_emp type_emp;
v_stars varchar2(50) ;
v_count number(3);
s_num number(3);
begin
SELECT min(employee_id) into s_num from emp;
SELECT count(*) into v_count from emp;
v_count := v_count + s_num;
for i in s_num .. v_count loop
SELECT salary
into rec_emp
from emp
where employee_id = i;
if rec_emp.emp_salary <1000 then
v_stars := null;
elsif rec_emp.emp_salary >=1000 and rec_emp.emp_salary <2000 then
v_stars := '*';
elsif rec_emp.emp_salary >=2000 and rec_emp.emp_salary <3000 then
v_stars …我是oracle包的新手,想知道是否有人可以解释为什么这不会编译/执行.
CREATE OR REPLACE PACKAGE login_pkg IS
FUNCTION login_ck_pf
(p_user IN VARCHAR2,
p_pass IN VARCHAR2)
RETURN CHAR;
END;
/
CREATE OR REPLACE PACKAGE BODY login_pkg IS
FUNCTION login_ck_pf
(p_user IN VARCHAR2,
p_pass IN VARCHAR2)
RETURN CHAR
IS
lv_ck_txt CHAR(1) := 'N';
lv_id_num NUMBER(5);
BEGIN
SELECT idShopper
INTO lv_id_num
FROM bb_shopper
WHERE username = p_user
AND password = p_pass;
IF SQL%FOUND THEN
lv_ck_txt := 'Y';
lv_id_num := lv_id_num;
END IF;
RETURN lv_ck_txt;
EXCEPTION
WHEN NO_DATA_FOUND THEN
DBMS_OUTPUT.PUT_LINE('Invalid Login');
lv_ck_txt := 'N'; …我试图使用jQuery直接调用ASP.NET AJAX页面方法.我正在使用encosia.com作为参考.我的内联JavaScript是
<script type="text/javascript">
$(document).ready(function() {
// Add the page method call as an onclick handler for the div.
$("#Result").click(function() {
$.ajax({
type: "POST",
url: "Default.aspx/GetDate",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function(msg) {
// Replace the div's content with the page method's return.
$("#Result").text(msg.d);
}
});
});
});
</script>
<div id="Result">Click here for the time.</div>
用我的webmethod
<WebMethod()> _
Public Shared Function GetDate() As String
Return DateTime.Now.ToString()
End Function
我会使用FF并检查发送的POST,但是因为我目前只有IE 7,所以这有点难.其他相关信息,ASP.net 2.0.有谁知道我做错了什么？
web.config - 预先存在仍然无法正常工作 …
//Get width and resize another element
$(document).ready(function() {
function ResizeSearch(GridID, SearchID) {
var eleWidth = $("#" + GridID).width();
$("#" + SearchID).width(eleWidth);
}
$("#getp").click(function() {
ResizeSearch("<%= gvValidStatus.ClientID %>", "ValidStatusSearch");
});
});
对于很多 stackoverflow 人来说，这是一个简单的问题。我有一些看起来像这样的代码：
var www = '?points=City%20Chairman%20Brutas&another=test';
var name = 'points';
var match = RegExp(RegExp('[?&]' + name + '=([^&]*)').exec(www)[1]);
match = decodeURIComponent(match);
match = match.replace('\/','');
document.write(match);
代码非常简单，出于 jsfiddle 的目的，我做了一个var而不是使用window.location.search. 我知道我需要使match.replaceGLOBAL 才能正常工作。它目前输出：
City Chairman Brutas/
如果我改变match.replace到match.replace('\//g','');这是行不通的。
以上输出： /City Chairman Brutas/
我知道我很接近，如果有人能指出我正确的方向，那将是很棒的。