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What is the difference between `git merge` and `git merge --no-ff`?
...ence between the two. How can I observe the difference (with a git command or some tool)?
6 Answers
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Can you use @Autowired with static fields?
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In short, no. You cannot autowire or manually wire static fields in Spring. You'll have to write your own logic to do this.
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What are the differences between “git commit” and “git push”?
In a Git tutorial I'm going through, git commit is used to store the changes you've made.
15 Answers
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using awk with column value conditions
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If you're looking for a particular string, put quotes around it:
awk '$1 == "findtext" {print $3}'
Otherwise, awk will assume it's a variable name.
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Linux command (like cat) to read a specified quantity of characters
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head works too:
head -c 100 file # returns the first 100 bytes in the file
..will extract the first 100 bytes and return them.
What's nice about using head for this is that the syntax for tail matches:
tail -c 100 file # re...
How can I pass a parameter to a Java Thread?
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You need to pass the parameter in the constructor to the Runnable object:
public class MyRunnable implements Runnable {
public MyRunnable(Object parameter) {
// store parameter for later user
}
public void run() {
}
}
and invoke it thus:
Runnable ...
Making Python loggers output all messages to stdout in addition to log file
...gs to stdout in addition to the log file where they are supposed to go? For example, I'd like all calls to logger.warning , logger.critical , logger.error to go to their intended places but in addition always be copied to stdout . This is to avoid duplicating messages like:
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How do I check which version of NumPy I'm using?
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import numpy
numpy.version.version
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Printing HashMap In Java
...the hashmap's key is TypeKey, but you specified TypeValue in your generic for-loop, so it cannot be compiled. You should change it to :
for (TypeKey name: example.keySet()){
String key = name.toString();
String value = example.get(name).toString();
System.out.p...
Can I call a constructor from another constructor (do constructor chaining) in C++?
As a C# developer I'm used to running through constructors:
15 Answers
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