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What is the $? (dollar question mark) variable in shell scripting? [duplicate]
...when you hit enter, a fork + exec + wait happens like above, and bash then sets $? to the exit status of the forked process.
Note: for built-in commands like echo, a process need not be spawned, and Bash just sets $? to 0 to simulate an external process.
Standards and documentation
POSIX 7 2.5.2 "Sp...
Converting Select results into Insert script - SQL Server [closed]
...SMS hasn't added this ability 'view output as insert script' on the result sets.. but the above approach works, although it creates individual insert commands instead of doing a proper bulk insert (say 1,000 items per insert) like it should . This can take forever to run on really large result sets...
“java.lang.OutOfMemoryError : unable to create new native Thread”
... thread problem. There's also an option called TasksMax (for more isolated settings) for services/systemd that are under [Service] TasksMax=(value). At SUSE, the default value is 512 (which is very limited for production use). More info suse.com/support/kb/doc/?id=000015901 systemctl daemon-reload,...
How to resolve : Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core” [du
... but having experienced the same problem I managed to solve the problem by setting a target server for my project.
i.e. right-click on your project and select 'Properties' -> 'Targeted Runtimes' and select the server you going to run your web app on (Tomcat 6 or 7).
...
Convert a PHP object to an associative array
...; 1,
'' . "\0" . '*' . "\0" . 'bar' => 2,
'baz' =>
stdClass::__set_state(array(
)),
)
Typecasting this way will not do deep casting of the object graph and you need to apply the null bytes (as explained in the manual quote) to access any non-public attributes. So this works best when...
Can javax.persistence.Query.getResultList() return null?
...
Just wrap it in an Optional.ofNullable() and you're set.
– de.la.ru
Sep 22 '17 at 14:01
I belie...
Spring Boot Remove Whitelabel Error Page
...andler because some exception was thrown in our app (and Spring implicitly sets response code to 500 which is correct); is there an easy way to get hold of that exception here (to include some details in error message returned)?
– Jonik
Feb 20 '15 at 13:07
...
Edit line thickness of CSS 'underline' attribute
...with it using a pair of box-shadows:
.custom-underline{
box-shadow: inset 0 0px 0 white, inset 0 -1px 0 black
}
First shadow is put on top of the second one and that's how you can control the second one by varying the 'px' value of both.
Plus: various colors, thickness and underline positio...
WinDbg基础资料（日本語） - IT优秀资料 - 清泛网 - 专注C/C++及内核技术
... Get Call Stack
(Signal Thread)
k
kv
kd
(Multi Thread)
~* k
~0s Set Current Thread，0はThread No.である、変数
④引き続き実行
(Signal Thread)
g
(Multi Thread)
~* g
⑤Get .Net Call Stack
.load C:\Windows\Microsoft.NET\Framework\v2.0.50727\SOS.dll
.loadb...
Android WebView, how to handle redirects in app instead of opening a browser
...new browser, instead of staying in my app. Is there a way I can change the settings so the View will redirect to the URL like normal, but stay in my app instead of opening a new browser?
...