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Long press on UITableView
...l tapping of the cell and also note that handleLongPress may fire multiple times (this will be due to the gesture recognizer state changes).
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What is the point of Lookup?
...mple means that you have to regenerate the Lookup from the Dictionary each time the latter changes. But for some data it could be the right solution.]
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Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
Every time I mention slow performance of C++ standard library iostreams, I get met with a wave of disbelief. Yet I have profiler results showing large amounts of time spent in iostream library code (full compiler optimizations), and switching from iostreams to OS-specific I/O APIs and custom buffer...
Defining a variable with or without export
...execd
execd process: export
Note that we don't see the parent: line this time, because we have replaced the parent shell with the exec command, so there's nothing left to execute that command.
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Pimpl idiom vs Pure virtual class interface
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Both pImpl and pure abstract base class are techniques to reduce compile time dependencies.
However, I only ever use pImpl to implement Value types (type 1), and only sometimes when I really want to minimize coupling and compile-time dependencies. Often, it's not worth the bother. As you rightly p...
What is the equivalent of the C++ Pair in Java?
...lets you return int; it doesn't force you to create an alias for int every time you use one. Pairs are not very different.
– Clément
Dec 4 '16 at 18:20
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Why are data transfer objects (DTOs) an anti-pattern?
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@John, This is incorrect. I do it all the time. Serialization uses reflection, which works just fine on anonymous types. Just pass it to the serializer as an object. And once it is serialized (to xml or json, for example) of course you can return it from a method.
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Difference between wait and sleep
...l built-in command. It is a utility that delays for a specified amount of time.
The sleep command may support waiting in various units of time. GNU coreutils 8.4 man sleep says:
SYNOPSIS
sleep NUMBER[SUFFIX]...
DESCRIPTION
Pause for NUMBER seconds. SUFFIX may be ‘s’...
How to check which locks are held on a table
...ReqOwnerType
,TAT.[name] AS TransName
,TAT.transaction_begin_time AS TransBegin
,DATEDIFF(ss, TAT.transaction_begin_time, GETDATE()) AS TransDura
,ES.session_id AS S_Id
,ES.login_name AS LoginName
,COALESCE(OBJ.name, PAROBJ.name) AS ObjectName
,PARIDX...
Is it possible to embed animated GIFs in PDFs?
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I haven't tested it but apparently you can add quicktime animations to a pdf (no idea why). So the solution would be to export the animated gif to quicktime and add it to the pdf.
Here the solution that apparently works:
Open the GIF in Quicktime and save as MOV (Apparently...