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How to crop an image in OpenCV using Python
...copy region of interest
If we consider (0,0) as top left corner of image called im with left-to-right as x direction and top-to-bottom as y direction. and we have (x1,y1) as the top-left vertex and (x2,y2) as the bottom-right vertex of a rectangle region within that image, then:
roi = im[y1:y2, x1...
How to return an array from JNI to Java?
...th the JNI function NewObjectArray(). From the perspective of JNI, that's all a two dimensional array is, an object array containing a number of other inner arrays.
The following for loop creates the inner arrays which are of type int[] using the JNI function NewIntArray(). If you just wanted t...
How to get current moment in ISO 8601 format with date, hour, and minute?
...ad safe.
ZonedDateTime.now( ZoneOffset.UTC ).format( DateTimeFormatter.ISO_INSTANT )
Result: 2015-04-14T11:07:36.639Z
You may be tempted to use lighter Temporal such as Instant or LocalDateTime,
but they lacks formatter support or time zone data.
Only ZonedDateTime works out of the box.
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Remove all spaces from a string in SQL Server
What is the best way to remove all spaces from a string in SQL Server 2008?
23 Answers
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Please explain the exec() function and its family
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Simplistically, in UNIX, you have the concept of processes and programs. A process is an environment in which a program executes.
The simple idea behind the UNIX "execution model" is that there are two operations you can do.
The first ...
How to do a Jquery Callback after form submit?
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And if the <form> is submited usually ? (I mean not with Ajax) What can I put in the first argument of .bind() ? EDIT : well, I guess click. Nvm, sorry. :p
– 4wk_
Feb 4 '13 at 13:32
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How to see query history in SQL Server Management Studio
...tary format. However if you need to see queries that were executed historically (except SELECT) this is the only way.
You can use third party tools for this such as ApexSQL Log and SQL Log Rescue (free but SQL 2000 only). Check out this thread for more details here SQL Server Transaction Log Explo...
Store query result in a variable using in PL/pgSQL
...s, as @Pavel commented.
I shortened the syntax with a table alias additionally.
Update: I removed my code example and suggest to use IF EXISTS() instead like provided by @Pavel.
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Deserialize JSON to ArrayList using Jackson
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Visually inspect your array to make sure you got back a list at least. And if need be add the mixin back, which should work along with the TypeReference to get everything neatly deserialized.
– Perception
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What's the best way to join on the same table twice?
...a fan of natural keys and this is a great example why. Natural keys, especially things like phone numbers, can change and frequently so. Updating your database when that change happens will be a HUGE, error-prone headache. *
Method 1 as you describe it is your best bet though. It looks a bit terse ...