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SQL: How to get the count of each distinct value in a column?
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SELECT
category,
COUNT(*) AS `num`
FROM
posts
GROUP BY
category
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When to use .First and when to use .FirstOrDefault with LINQ?
... The only thing I'd add is that if the default value for the type you're selecting could be a valid value, for instance your result might be the int value 0, then handling the exception seems to be the best way to handle this.
– PeterBelm
Apr 19 '12 at 8:59
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Shortcuts in Objective-C to concatenate NSStrings
...%@", three, two, one]; technique seems the most elegant. It should be the selected answer.
– ekillaby
Feb 21 '14 at 19:39
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SVN+SSH, not having to do ssh-add every time? (Mac OS)
...e is a -K flag on OS X for ssh-add. Additional to that, this should be the selected answer.
– kaiser
Dec 8 '15 at 13:54
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How to get the IP address of the server on which my C# application is running on?
... address.AddressPreferredLifetime != UInt32.MaxValue
select address.Address);
}
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How do I create a readable diff of two spreadsheets using git diff?
...ally have the references inserted into the formula)
Ctrl+C (copy), Ctrl+A (select all), Ctrl+V (paste) to fill the sheet.
If the sheets are similar, this spreadsheet will be empty except for a few cells with X in them, highlighting the differences. Unzoom to 40% to quickly see what is different.
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Can you call Directory.GetFiles() with multiple filters?
...lters, System.IO.SearchOption searchOption)
{
return filters.Split('|').SelectMany(filter => System.IO.Directory.GetFiles(sourceFolder, filter, searchOption)).ToArray();
}
I found it here (in the comments): http://msdn.microsoft.com/en-us/library/wz42302f.aspx
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jQuery: How can i create a simple overlay?
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}
JavaScript
(function () {
// Add photo overlay hover behavior to selected images
$("img[data-photo-overlay='true']").mouseenter(showPhotoOverlay);
// Create photo overlay elements
var _isPhotoOverlayDisplayed = false;
var _photoId;
var _photoOverlay = $("<div id='ph...
iPhone get SSID without private library
...ected to NSDictionary *networkDict = [self fetchSSIDInfo]; // Select the SSID from the network information NSString *iPhoneNetworkSSID = [networkDict objectForKey:@"SSID"];
– Groot
Dec 17 '12 at 13:13
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Git: Pull from other remote
...choose any that you like when using git remote add. Depending on what you select for this name, your git pull usage will change. For example, if you use:
git remote add upstream git://github.com/somename/original-project.git
then you would use this to pull changes:
git pull upstream master
But...