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MySQL check if a table exists without throwing an exception
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If you're using MySQL 5.0 and later, you could try:
SELECT COUNT(*)
FROM information_schema.tables
WHERE table_schema = '[database name]'
AND table_name = '[table name]';
Any results indicate the table exists.
From: http://www.electrictoolbox.com/check-if-mysql-table-exis...
The type or namespace name 'Objects' does not exist in the namespace 'System.Data'
...ontext.tt and be nested under your edmx file in Solution Explorer. You can select the templates in Solution Explorer and press the Del key to delete them.
Note: In Web Site projects the templates will not be nested under your edmx file, but listed alongside it in Solution Explorer.
Note: In VB.N...
How can I get every nth item from a List?
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}
and you write in a LINQish way
from var element in MyList.GetNth(10) select element;
2nd Edit:
To make it even more LINQish
from var i in Range(0, ((myList.Length-1)/n)+1) select list[n*i];
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How do I center a window onscreen in C#?
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Using the Property window
Select form → go to property window → select "start position" → select whatever the place you want.
Programmatically
Form form1 = new Form();
form1.StartPosition = FormStartPosition.CenterScreen;
form1.ShowDialog();
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RVM is not working in ZSH
I'd like to try out the ZSH shell on my Mac, but I also do a lot of Ruby and Rails development, so I use RVM quite a bit too. The problem is that I can't seem to get RVM to work in ZSH, and it's working fine in the default Bash shell:
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Apache: “AuthType not set!” 500 Error
...d the Apache httpd web server. I'm firing up a local server for a project and when I try to request localhost/index.html, I get a 500 error and I see this in the error log:
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How do you automatically set text box to Uppercase?
...ly expanded version should resolve that
<input oninput="let p=this.selectionStart;this.value=this.value.toUpperCase();this.setSelectionRange(p, p);" />
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How does one parse XML files? [closed]
...t;XElement> elements = from c in doc.Descendants(ns + "exampleTagName") select c;
// obtain a single element with specific tag (first instance), useful if only expecting one instance of the tag in the target doc
XElement element = (from c in doc.Descendants(ns + "exampleTagName" select c...
Default value of BOOL
...ective-C objects are always set to 0 (or nil) when you allocate an object" and I cannot find any other, clearer, reference, so it's all a bit contradictory to me.
– Kristof Van Landschoot
Sep 9 '13 at 8:47
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How to check command line parameter in “.bat” file?
... I need to have a ".bat" file where I need to check if user enters any command-line parameter or not. If does then if the parameter equals to -b then I will do something otherwise I will flag "Invalid input". If user does not enter any command-line parameter then I will do something. I have crea...