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How do I find a “gap” in running counter with SQL?
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This works in SQL Server - can't test it in other systems but it seems standard...
SELECT MIN(t1.ID)+1 FROM mytable t1 WHERE NOT EXISTS (SELECT ID FROM mytable WHERE ID = (t1.ID + 1))
You could also add a starting point to the where clause...
SELECT MIN(...
Objective-C: Reading a file line by line
...it keeps reading until it hits a newline or end-of-file.
Note: I have not tested this code. Please test it before using it.
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What does “var FOO = FOO || {}” (assign a variable or an empty object to that variable) mean in Java
...thout providing a parameter
display(); // this will log 'default'
display('test'); // this will log 'test' to the console
The equivalent in other programming usually is:
function display(a = 'default') {
// ...
}
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Modify tick label text
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labels = [item.get_text() for item in ax.get_xticklabels()]
labels[1] = 'Testing'
ax.set_xticklabels(labels)
plt.show()
To understand the reason why you need to jump through so many hoops, you need to understand a bit more about how matplotlib is structured.
Matplotlib deliberately avoids d...
Git - Difference Between 'assume-unchanged' and 'skip-worktree'
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Note: fallengamer did some tests in 2011 (so they may be outdated), and here are his findings:
Operations
File is changed both in local repository and upstream
git pull:
Git preserves local changes anyway.
Thus you wouldn’t accidentally lose any d...
C++ new int[0] — will it allocate memory?
A simple test app:
6 Answers
6
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std::function vs template
...ut these new additions. The most popular is that they are horribly slow. I tested it and they truly suck in comparison with templates.
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C# HttpClient 4.5 multipart/form-data upload
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I test on my computer(win7 sp1, IIS 7.5) without Content-Type and Content-Disposition is Ok, but on Server 2008 R2(IIS 7.5) can't find files, it's strange. So I do as the answer.
– chengzi
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How to check if hex color is “too black”?
...ting luma value range is 0..255, where 0 is the darkest and 255 is the lightest. Values greater than 128 are considered light by tinycolor. (shamelessly copied from the comments by @pau.moreno and @Alnitak)
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Forward function declarations in a Bash or a Shell script?
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This is also fantastic when using tools like Bats to test your scripts, breaking everything down into functions makes testing the individual components much easier. See also blog post
– dragon788
Aug 9 '18 at 19:53
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