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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
...得与这个行业不相关。所以不要以年龄做为借口。
我是81年的，但是我没有停止过学习，因为我知道还有那么多年轻人比你优秀，你有什么资格不再学习？而且我是做前端的，很多人知道，前端越来越难，新技术新工具新框架...
Deleting an element from an array in PHP
...there an easy way to delete an element from an array using PHP, such that foreach ($array) no longer includes that element?
...
Manually adding a Userscript to Google Chrome
...abled. See Continuing to "protect" Chrome users from malicious extensions for more information. Again, Tampermonkey is the smart way to go. (Or switch browsers altogether to Opera or Firefox.)
Chrome 21+ :
Chrome is changing the way extensions are installed. Userscripts are pared-down extensions...
Current time in microseconds in java
...s no getTimeInMicroseconds() include 1) accuracy not available on many platforms, 2) returning millisecond accuracy in a microsecond call leads to application portability issues.
– Stephen C
Nov 11 '09 at 4:17
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Create directories using make file
...But with a bit of care, it can be done. OTOH, it might not be appropriate for a newbie.
As noted in the comments, listing the 'mkdir' command as the action for 'directories' is wrong. As also noted in the comments, there are other ways to fix the 'do not know how to make output/debug' error tha...
How to convert SecureString to System.String?
... try {
valuePtr = Marshal.SecureStringToGlobalAllocUnicode(value);
for (int i=0; i < value.Length; i++) {
short unicodeChar = Marshal.ReadInt16(valuePtr, i*2);
// handle unicodeChar
}
} finally {
Marshal.ZeroFreeGlobalAllocUnicode(valuePtr);
}
}
...
What is a regular expression which will match a valid domain name without a subdomain?
...
Well, it's pretty straightforward a little sneakier than it looks (see comments), given your specific requirements:
/^[a-zA-Z0-9][a-zA-Z0-9-]{1,61}[a-zA-Z0-9]\.[a-zA-Z]{2,}$/
But note this will reject a lot of valid domains.
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Can't specify the 'async' modifier on the 'Main' method of a console app
...ember from our intro post that an async method will return to its caller before it is complete. This works perfectly in UI applications (the method just returns to the UI event loop) and ASP.NET applications (the method returns off the thread but keeps the request alive). It doesn't work out so well...
Java 8 NullPointerException in Collectors.toMap
...lue without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
13 Answers
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What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
...
ifeq ($(origin FOO), undefined)
FOO = bar
endif
See the documentation for more details.
Append
VARIABLE += value
Appending the supplied value to the existing value (or setting to that value if the variable didn't exist)
...