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What Makes a Method Thread-safe? What are the rules?
...ethod thread-safe? I understand that there are probably a million one-off situations, but what about in general? Is it this simple?
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How to call a method after bean initialization is complete?
...static) method in the bean only-once at the ApplicationContext load up. Is it ok, if I use MethodInvokingFactoryBean for this? Or we have a some better solution?
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Run a batch file with Windows task scheduler
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I faced the same problem, but I found another solution without having to modify my batch script.
The only thing that I missed out is at the 'Action' settings - "Start in (Optional)" option.
Go the task properties --> Action tab --> Edit --> Fill up as below:
Action: S...
Environment variables for java installation
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Java SE Development Kit 8u112 on a 64-bit Windows 7 or Windows 8
Set the following user environment variables (== environment variables of type user variables)
JAVA_HOME : C:\Program Files\Java\jdk1.8.0_112
JDK_HOME : %JAVA_HOME%
JRE_HOME : ...
Generating an MD5 checksum of a file
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You can use hashlib.md5()
Note that sometimes you won't be able to fit the whole file in memory. In that case, you'll have to read chunks of 4096 bytes sequentially and feed them to the md5 method:
import hashlib
def md5(fname):
hash_md5 = hashlib.md5()
with open(fname, "rb") as f:
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Can't connect Nexus 4 to adb: unauthorized
I have a Nexus 4 with Android 4.3 and I am trying to connect the device to a computer with Windows 7 64bit.
26 Answers
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What causes “Unable to access jarfile” error?
I want to execute my program without using an IDE.
I've created a jar file and an exectuable jar file. When
I double click the exe jar file, nothing happens, and when I try to use the command in cmd it gives me this:
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MYSQL OR vs IN performance
...81504631s
Update:
(I don't have the source code for the original test, as it was 6 years ago, though it returns a result in the same range as this test)
In request for some sample code to test this, here is the simplest possible use case. Using Eloquent for syntax simplicity, raw SQL equivalent ex...
Why do you program in assembly? [closed]
... across this sentence in a blog. I don't really think the source matters (it's Haack if you really care) because it seems to be a common statement.
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How do I use NSTimer?
... lists guides for the topic being documented (if any exist). For example, with NSTimer, the documentation lists two companion guides:
Timer Programming Topics for Cocoa
Threading Programming Guide
For your situation, the Timer Programming Topics article is likely to be the most useful, whilst th...