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Proper way to wait for one function to finish before continuing?
...it. While callbacks are absolutely fine, in my experience they tend to result in code that is more difficult to read and maintain. There are situations where I still use them though, such as to pass in progress events and the like as parameters. This update is just to emphasise alternatives.
Also t...
SQL standard to escape column names?
...s that double quote (") (QUOTATION MARK) is used to delimit identifiers.
<delimited identifier> ::= <double quote> <delimited identifier body> <double quote>
Oracle, PostgreSQL, MySQL, MSSQL and SQlite all support " as the identifier delimiter.
They don't all use " as the...
Looking for ALT+LeftArrowKey solution in zsh
I just recently switched from bash to zsh, however I miss my Alt + LeftArrowKey and Alt + RightArrowKey to go back and forth a word at a time.
...
Shuffling a list of objects
...s [[9], [2], [7], [0], [4], [5], [3], [1], [8], [6]]
# of course your results will vary
Note that shuffle works in place, and returns None.
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ActiveRecord: size vs count
...
Be careful with just defaulting to size, however. For example if you create a new record without going through the relation, i.e. Comment.create(post_id: post.id), your post.comments.size will not be up to date, while post.comments.count will. So just...
How to parse a query string into a NameValueCollection in .NET
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There's a built-in .NET utility for this: HttpUtility.ParseQueryString
// C#
NameValueCollection qscoll = HttpUtility.ParseQueryString(querystring);
' VB.NET
Dim qscoll As NameValueCollection = HttpUtility.ParseQueryString(querystring...
C99 stdint.h header and MS Visual Studio
...pedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
#else
#include <stdint.h>
#endif
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Error in finding last used cell in Excel with VBA
...y and then pressing Down Arrow key. This will also give you unreliable results if there are blank cells in a range.
CountA is also unreliable because it will give you incorrect result if there are blank cells in between.
And hence one should avoid the use of UsedRange, xlDown and CountA to find t...
How can I test if a letter in a string is uppercase or lowercase using JavaScript?
...lower case if the character or the whole string is numeric. making the result a false result.
example using josh
var character = '5';
if (character == character.toUpperCase()) {
alert ('upper case true');
}
if (character == character.toLowerCase()){
alert ('lower case true');
}
another way is ...
Linux automake自动编译全攻略 - 脚本技术 - 清泛IT社区，为创新赋能！
...ocal
# aclocal.m4 -> configure
autoconf
# avoid: required file `build/ltmain.sh' not found
# --copy copy files rather than symlinking them
# --debug enable verbose shell tracing
# --force ...