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schema builder laravel migrations unique on two columns
...e generated index names are in the format table_column1_column2...n_unique if anyone is unsure. Dropping the unique constraint would then be referencing that in $table->dropUnique('table_column1_column2...n_unique');
– Jonathan
May 5 '17 at 13:26
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Append column to pandas dataframe
... way probably only matters when you consider edge cases. For instance here if both DataFrames had a 'data' column the join would fail, whereas a concat would give you two columns named 'data'.
– U2EF1
Dec 16 '13 at 20:37
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Why can't I access DateTime->date in PHP's DateTime class?
Using the DateTime class, if I try to run the following code:
5 Answers
5
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Setting Vim whitespace preferences by filetype
...ndent based on the size of tabstop, and then spaces after that. Of course, if expandtab is on, all the tabs that get inserted are converted to spaces. stackoverflow.com/questions/1562336/… might help further. Without expand tab, Peter's answer would insert tabs that are 2 chars wide, not spaces.
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PHP prepend associative array with literal keys?
... an associative array with literal key=>value pairs? I know that array_unshift() works with numerical keys, but I'm hoping for something that will work with literal keys.
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How to convert std::string to lower case?
...no way to know whether the character is lowercase or uppercase otherwise.
If you really hate tolower(), here's a specialized ASCII-only alternative that I don't recommend you use:
char asciitolower(char in) {
if (in <= 'Z' && in >= 'A')
return in - ('Z' - 'z');
return...
Set folder browser dialog start location
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This is however not the same as setting RootFolder. If RootFolder is set, only the specified folder and any subfolders that are beneath it will appear in the dialog box. SelectedPath merely pre-selects the given path.
– Jan Gassen
Jul 31 ...
How to pass parameters to a partial view in ASP.NET MVC?
...s via ViewData... but help keep things tidy by simply creating a model specific to your usage. Use it once and some may consider it a toss up, but use it any more times than that and it's a no-brainer.
– Ted
Nov 7 '13 at 20:35
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VS2005混合编译ARM汇编代码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...,2,3,4);
wsprintf(szTemp, L"Result = %d", iResult);
MessageBox(HWND_DESKTOP, szTemp, L"ASM Result", MB_OK);
return 0;
} /* WinMain() */
四. Build VS2005的Project，当你看到如下信息时，恭喜你~~~你成功了！
========= Rebuild All: 1 succeeded, 0 failed, 0...
Android Center text on canvas
...= (Width - textPaint.TextSize * Math.Abs(_text.Length / 2)) / 2; Not sure if there's a better way to accomplish this.
– paj7777
Apr 8 '13 at 9:06
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