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Returning value from called function in a shell script
...nuelJordan, Functions can only return exit codes and >&2 logs to stderror, so, the last echo is written to stdout, so, the calling function ONLY captures stdout and not stderr. Assuming execution is single threaded, a better option is to maintain a custom variable specific like TEST_LOCK_STAT...
how to replicate pinterest.com's absolute div stacking layout [closed]
I am looking to replicate Pinterest.com's div layout, specifically how the number of columns adjusts to fit more/less on browser resize and the vertical stacking is not dependent on adjacent column heights. The source code shows that each div is position absolute. A co-founder has answered a Quora p...
Assigning a variable NaN in python without numpy
...aking) be said to be equal to one another -- see What is the rationale for all comparisons returning false for IEEE754 NaN values? for more details and information.
Instead, use math.isnan(...) if you need to determine if a value is NaN or not.
Furthermore, the exact semantics of the == operation...
What is a web service endpoint?
...Service– a collection of related endpoints.
http://www.ehow.com/info_12212371_definition-service-endpoint.html
The endpoint is a connection point where HTML files or active server pages are exposed. Endpoints provide information needed to address a Web service endpoint. The endpoint provi...
RVM is not a function, selecting rubies with 'rvm use …' will not work
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@AdityaPednekar So, sometimes reading the error/console message actually helps, RVM is not a function, selecting rubies with 'rvm use ...' will not work. You need to change your terminal emulator preferences to allow login shell. Sometimes it is required to use /b...
How do I clear all options in a dropdown box?
...
You can use the following to clear all the elements.
var select = document.getElementById("DropList");
var length = select.options.length;
for (i = length-1; i >= 0; i--) {
select.options[i] = null;
}
...
ArrayList vs List in C#
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Using List<T> you can prevent casting errors. It is very useful to avoid a runtime casting error.
Example:
Here (using ArrayList) you can compile this code but you will see an execution error later.
ArrayList array1 = new ArrayList();
array1.Add(1);
array1.Add...
What are .a and .so files?
...ories... /usr/lib and /lib have most of them, and there is also the LIBRARY_PATH environment variable.
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Should I use “hasClass” before “addClass”? [duplicate]
...able as well.. (click on line number and shift+click on another to select all lines..)
– Gabriele Petrioli
Nov 13 '12 at 10:30
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Linux升级OpenSSL的方法 - 操作系统(内核) - 清泛网 - 专注IT技能提升
...ssl' #ubuntu 和debian可以用
2、升级openssl版本：
yum clean all && yum update "openssl*" #redhat系列用这个
apt-get update && apt-get upgrade #ubuntu和debian可以用
zypper update #OpenSuSE可以用
参考：https://www.jb51.net/LINUXjishu/348267.html
openssl