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How to save a BufferedImage as a File
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Also, make sure that outputfile exists. If it doesn't, write() will (incorrectly) throw a NullPointerException
– Cody S
Oct 23 '14 at 18:52
9
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keep rsync from removing unfinished source files
...is transferring a file before it's complete, not that you're deleting it.
If this is Linux, it's possible for a file to be open by process A and process B can unlink the file. There's no error, but of course A is wasting its time. Therefore, the fact that rsync deletes the source file is not a pr...
How to obtain the last path segment of a URI
...rching for Android's android.net.Uri (not java.net.URI) and ended up here. If you're using that instead, there's a method there called getLastPathSegment() which should do the same thing. :)
– pm_labs
Mar 4 '13 at 4:19
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json.net has key method?
If my response has key "error" I need to process error and show warning box.
3 Answers
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How to efficiently count the number of keys/properties of an object in JavaScript?
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-1 (-200 if I could) This not only iterates through the object but also creates a whole new array with all its keys, so it completely fails at answering the question.
– GetFree
Jun 22 '12 at 14:2...
Using Python's os.path, how do I go up one directory?
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Using abspath will just clean it up a bit. If it's not there, the actual string for the path name will be /Users/hobbes3/Sites/mysite/mysite/../templates, which is perfectly fine, but just a little more cluttered. It also ensures that Django's reminder to use absolute...
Add a prefix string to beginning of each line
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# If you want to edit the file in-place
sed -i -e 's/^/prefix/' file
# If you want to create a new file
sed -e 's/^/prefix/' file > file.new
If prefix contains /, you can use any other character not in prefix, or
escape t...
Use JAXB to create Object from XML String
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Could you expand this answer to include if the "xml string here" includes a SOAP envelope?
– JWiley
Mar 11 '14 at 14:25
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Disable copy constructor
... unnecessary and deleting them prevents some cases of unexpected behavior. If a situation occurs where a copy ctor may be needed, determine if it can be done with move semantics. If this is undesirable, provide an implementation for both(!) the copy ctor and assignment operator. Whether this is a go...
How to check if a specific key is present in a hash or not?
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my_hash2.has_key?("my_key".to_sym)
=> false
But when creating hash if you pass string as key then it will search for the string in keys.
But when creating hash you pass symbol as key then has_key? will search the keys by using symbol.
If you are using Rails, you can use Hash#with_indiffe...