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Do I need to close() both FileReader and BufferedReader?
I'm reading a local file using a BufferedReader wrapped around a FileReader:
9 Answers
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常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...了一些常用的Git命令。
常用配置
system #系统级别
--global #用户全局
--local #单独一个项目
git config --global user.name "xxxx" #用户名
git config --global user.email "xxxx@xxx.com" #邮箱
git config --global core.editor vim #编辑器
git config --global ali...
Linux command to print directory structure in the form of a tree
Is there any linux command that I can call from a Bash script that will print the directory structure in the form of a tree, e.g.,
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How do you specify a byte literal in Java?
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Safely override C++ virtual functions
... // force handle_event to override a existing function in parent
// error out if the function with the correct signature does not exist
void handle_event(int something) override;
};
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“where 1=1” statement [duplicate]
... example if the $_REQUEST['cond'] is not "age" the query will return mysql error because there are nothing after the where condition.
the query will be select * from some_table where and that is error
to fix this issue (at least in this insecure example) we use
<?php
//not that this is just ...
Error: invalid_client no application name
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That error is displayed in case that under "APIs & auth" -> "Consent screen" you have empty field "PRODUCT NAME" - you need to select e-mail address as well.
You can find "Consent screen" under a link!, click on project na...
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '…' is therefor
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Why the error is raised:
JavaScript code is limited by the same-origin policy, meaning, from a page at www.example.com, you can only make (AJAX) requests to services located at exactly the same domain, in that case, exactly www.examp...
Print a file, skipping the first X lines, in Bash [duplicate]
I have a very long file which I want to print, skipping the first 1,000,000 lines, for example.
13 Answers
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How to get the first five character of a String
...g for length before hand.
The other way is to use String.Substring with error checking
like:
string firstFivCharWithSubString =
!String.IsNullOrWhiteSpace(yourStringVariable) && yourStringVariable.Length >= 5
? yourStringVariable.Substring(0, 5)
: yourStringVariable;
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