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“Width equals height” constraint in Interface Builder

...click and drag from a view and release while the pointer is over the view. Select "Aspect Ratio". It will create a constraint where the first and second item is the view. Before Xcode 5.1 You can't because the width/height editor lacks the fields to relate to another property or set the ratio: ...
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Enable 'xp_cmdshell' SQL Server

...gure calls: declare @prevAdvancedOptions int declare @prevXpCmdshell int select @prevAdvancedOptions = cast(value_in_use as int) from sys.configurations where name = 'show advanced options' select @prevXpCmdshell = cast(value_in_use as int) from sys.configurations where name = 'xp_cmdshell' if (@...
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400 BAD request HTTP error code meaning?

... Selecting a HTTP response code is quite an easy task and can be described by simple rules. The only tricky part which is often forgotten is paragraph 6.5 from RFC 7231: Except when responding to a HEAD request, the server...
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How do I add more members to my ENUM-type column in MySQL?

... do not appear in your ENUM. What is the output of the following command? SELECT DISTINCT country FROM carmake; ANOTHER EDIT: What is the output of the following command? SHOW VARIABLES LIKE 'sql_mode'; Is it STRICT_TRANS_TABLES or STRICT_ALL_TABLES? That could lead to an error, rather than the ...
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How to print the current Stack Trace in .NET without any exception?

...oint where you want to see the stack trace. Right-click the breakpoint and select "Actions..." in VS2015. In VS2010, select "When Hit...", then enable "Print a message". Make sure "Continue execution" is selected. Type in some text you would like to print out. Add $CALLSTACK wherever you want to se...
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Can't find a “not equal” css attribute selector

... One problem with the accepted answer is that it will also select elements that do not have a foo attribute at all. Consider: <div>No foo</div> <div foo="">Empty foo</div> <div foo="x">XXX</div> <div foo="y">YYY</div> <div foo="z"&g...
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)

...that was True False and vice-versa. In this case, that means that we will select out the ones that are not duplicated according to the method. – n8yoder Feb 27 at 2:35 1 ...
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Understanding keystore, certificates and alias

...d Application Package option of the Eclipse Android tool, you are asked to select a keystore first, and then asked to select a single alias/entry/pair from that keystore. After providing the passwords for both the keystore and the chosen alias, the app is signed and the public key (the certificate) ...
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Working with time DURATION, not time of day

...rmula, =A1, then highlight the cell, go into the formatting dropdown menu, select Custom, and type in dddd. Repeat all this in the row below. Finally, say you want to display that duration in cell D2. Enter the formula, =(a2+b2)-(a1+b1). If you want this displayed as "22h 30m", select the cell, ...
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How do I hide an element on a click event anywhere outside of the element?

... you have other elements inside .myDiv element. For example, if you have a select dropdown inside .myDiv. When you click the select, it will think youre clicking outside the box. – CodeGodie Nov 22 '16 at 15:13 ...