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App Inventor 2 中文网 · 项目指南
...一名学生，升级VIP会员后，可以随时随地在线编程，遇到问题提问都能及时得到详细解答，我的App开发技能得到了极大的提升！另外，我享受到VIP学生价格优惠，非常划算！ ...
Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...有多台服务器，频繁的修改，会涉及到版本发布和部署的问题，非常的不方便。
Step 2：
总是骚扰IT部门的同事不太好，我们决定把这儿的统计脚本独立出来，并放到文件域，如：www.mysite_file.com/track/site_a.js，然后把这个js的引...
Permission denied on accessing host directory in Docker
...s script is:
# update the uid
if [ -n "$opt_u" ]; then
OLD_UID=$(getent passwd "${opt_u}" | cut -f3 -d:)
NEW_UID=$(stat -c "%u" "$1")
if [ "$OLD_UID" != "$NEW_UID" ]; then
echo "Changing UID of $opt_u from $OLD_UID to $NEW_UID"
usermod -u "$NEW_UID" -o "$opt_u"
if [ -n "$opt_r" ];...
Sending HTML email using Python
... smtplib.SMTP('localhost')
s.starttls()
s.login(email_login,
email_passwd)
s.sendmail(msg['From'], [msg['To']], msg.as_string())
s.quit()
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Authenticating in PHP using LDAP through Active Directory
...
Provide additional information if it failed (ie. locked/disabled account, etc)
There are other libraries to do this too (Such as Adldap2). However, I felt compelled enough to provide some additional information as the most up-voted answer is actually a security risk to rely on with no input valid...
30岁之后，程序员该向什么方向发展？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...，脑袋没有那么灵光，没有那么有冲劲了，这也是个人的问题。如果你自己不努力，到多少岁都一样。
以前也有人问我二十几岁再开始编程晚不晚，我的回答是，不晚，什么时候都不晚。
QA&2. 您个人或身边有这样的实例吗？...
isset() and empty() - what to use
...y checks if the variable is set and if it is it checks it for null, "", 0, etc
Isset just checks if is it set, it could be anything not null
With empty, the following things are considered empty:
"" (an empty string)
0 (0 as an integer)
0.0 (0 as a float)
"0" (0 as a string)
NULL
FALSE
array() (...
HTTP authentication logout via PHP
...nce of state stored on the server in some manner (mysql, sqlite, flatfile, etc). This will require all requests to be evaluated, for instance, with PHP.
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How do I get an object's unqualified (short) class name?
...lead to unexpected results if mis-used (protected methods becoming public, etc.). You can use simple string replacement on PHP magic constants instead: str_replace(__NAMESPACE__ . '\\', '', __CLASS__);. It's also much faster, performance-wise.
– Franklin P Strube
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How can I store my users' passwords safely?
...e flag. This allows the stored proc to log the attempt, create a session, etc.
– Steven Sudit
Mar 25 '10 at 20:09
@In...