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How do I use extern to share variables between source files?
...of doing it, this method is simple and
reliable.
It is demonstrated by file3.h, file1.c and file2.c:
file3.h
extern int global_variable; /* Declaration of the variable */
file1.c
#include "file3.h" /* Declaration made available here */
#include "prog1.h" /* Function declarations */
/* Variable ...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
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341
RDDs extend the Serialisable interface, so this is not what's causing your task to fail. Now t...
How can I alter a primary key constraint using SQL syntax?
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edited Jun 13 '13 at 11:58
Oleg Dok
19.3k22 gold badges4040 silver badges5353 bronze badges
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UnicodeDecodeError: 'utf8' codec can't decode byte 0x9c
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349
http://docs.python.org/howto/unicode.html#the-unicode-type
str = unicode(str, errors='replace...
How do I export UIImage array as a movie?
...;
[videoWriter startSessionAtSourceTime:…] //use kCMTimeZero if unsure
3) Write some samples:
// Or you can use AVAssetWriterInputPixelBufferAdaptor.
// That lets you feed the writer input data from a CVPixelBuffer
// that’s quite easy to create from a CGImage.
[writerInput appendSampleBuffer...
How do you Encrypt and Decrypt a PHP String?
...nticate the ciphertext with HMAC-SHA-256 (or, for the stream ciphers, Poly1305 -- most libsodium APIs do this for you). The MAC should cover the IV as well as the ciphertext!
Decryption:
Unless Poly1305 or GCM is used, recalculate the MAC of the ciphertext and compare it with the MAC that was sent...
How to get current PHP page name [duplicate]
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3 Answers
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Javascript - removing undefined fields from an object [duplicate]
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163
A one-liner using ES6 arrow function and ternary operator:
Object.keys(obj).forEach(key => o...
How to convert SQL Query result to PANDAS Data Structure?
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DanielDaniel
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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file
...Oracle\Java\javapath;C:\Program Files (x86)\Java\jre6\bin;C:\WINDOWS\System32\WindowsPowerShell\v1.0\ (and many other entries)
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