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How to efficiently count the number of keys/properties of an object in JavaScript?
...t only iterates through the object but also creates a whole new array with all its keys, so it completely fails at answering the question.
– GetFree
Jun 22 '12 at 14:28
43
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How to slice an array in Bash
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Detecting Windows or Linux? [duplicate]
...
Try:
System.getProperty("os.name");
http://docs.oracle.com/javase/7/docs/api/java/lang/System.html#getProperties%28%29
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phpcms v9与ucenter通信失败 完美解决 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...参数配置如下：
应用名称：phpsso
应用的主 URL：http：//localhost/phpcms/phpsso_server （必填， phpcms 安装路径，视实际情况而定，最后不要带斜线）
应用 IP：（选填，正常情况下留空即可。如果由于域名解析问题导致 UCent...
Eclipse XDebug配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
Eclipse XDebug配置http: xdebug org wizard php来输入拷贝的phpinfo信息来检测该下载哪个版本文件。zend_extension = php_xdebug-2 5 4-5 6-vc11-nts-x86_ http://xdebug.org/wizard.php
来输入拷贝的phpinfo信息来检测该下载哪个版本文件。
php.ini末尾添加如...
App Inventor 2 中文网 · 升级日志
...翻译。 230516 2023/05/16 优化 启用HSTS（HTTP Strict Transport Security）安全机制。 升级 启用 h2（HTTP 2.0）协议。 230418 2023/04/18 新增 公安备案通过，备案号：沪公网安备31011702008921号。 ...
Best way to iterate through a Perl array
...ay elements occurs. ($_ is aliased to the element in #1, but #2 and #3 actually copy the scalars from the array.)
#5 might be similar.
In terms memory usage: They're all the same except for #5.
for (@a) is special-cased to avoid flattening the array. The loop iterates over the indexes of the array...
How can I use a local image as the base image with a dockerfile?
...-pull=true will always attempt to pull a newer
version of the image.
-https://github.com/docker/docker/issues/14943
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Python: most idiomatic way to convert None to empty string?
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If you actually want your function to behave like the str() built-in, but return an empty string when the argument is None, do this:
def xstr(s):
if s is None:
return ''
return str(s)
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Kotlin secondary constructor
...tructors in Kotlin since these constructors are necessary sometimes, especially when working with Java frameworks and extending Java classes. Hope you'll get them back soon.
– Michael
Jul 17 '14 at 7:46
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