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uppercase first character in a variable with bash
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foo="$(tr '[:lower:]' '[:upper:]' <<< ${foo:0:1})${foo:1}"
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Changing the current working directory in Java?
How can I change the current working directory from within a Java program? Everything I've been able to find about the issue claims that you simply can't do it, but I can't believe that that's really the case.
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代码块超过1.2w编译apk报错问题 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
报错信息：
3月 04, 2025 9:50:11 上午 com.google.appengine.tools.development.ApiProxyLocalImpl log
严重: javax.servlet.ServletContext log: Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract long com.google.appinv...
how to bypass Access-Control-Allow-Origin?
...m which they set prevent these ajax calls (but I need it to fetch the data from my server to display retrieved data from my server's database).
My ajax script is working , it can send the data over to my server's php script to allow it to process.
However it cannot get the processed data back as it ...
Why isn't Python very good for functional programming? [closed]
...e, powerful expression syntax (Python's simple block syntax prevents Guido from adding it)
No pattern matching and no tail recursion mean your basic algorithms have to be written imperatively. Recursion is ugly and slow in Python.
A small list library and no functional dictionaries mean that yo...
C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t.cpp
3: //说明：C++虚拟继承学习演示
4: //环境：VS2005
5: //blog：pppboy.blog.163.com
6: //----------------------------------------------------
7: #include "stdafx.h"
8: #include <iostream>
9: using namespace std;
10:
11: //Base
12: class ...
Export/import jobs in Jenkins
...ing jobs between servers
The trick probably was the need to reload config from the Jenkins Configuration Page.
Update 2020.03.10
The JenkinsCI landscape has changed a lot... I've been using Job DSL for a while now.
We have a SEED Job that generates the rest of the jobs.
This helps us both recrea...
convert string array to string
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string[] test = new string[2];
test[0] = "Hello ";
test[1] = "World!";
string.Join("", test);
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Explain “claims-based authentication” to a 5-year-old
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@Marnix has a pretty good answer, but to step away from the technical aspect of it:
Claims Based Authentication is about defining who you trust to give you accurate information about identity, and only ever using that information provided. My (the) go-to example is at a bar...
How to schedule a periodic task in Java?
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Alex
7,21088 gold badges3737 silver badges4848 bronze badges
answered Oct 18 '11 at 21:44
b_erbb_erb
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