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What is the difference between save and insert in Mongo DB?
...e save will do -> It will do normal insertion
upsert to insert.Now in this case as insert() do.
what that means, it means
take the document and replace
the complete document having same
_id.
Let us consider the two cases here for insert:-
1) Having _id of...
What's the advantage of a Java enum versus a class with public static final fields?
...");. I change the signature of Foo::bar to public void bar(String foobar). Now the person who called someFoo will need to modify their code if they still want it to work.
– Jeffrey
Jul 15 '15 at 16:09
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Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...answer to the asked question. Despite interesting information (and a must know for any C/C++ programmer), this is no forum, and doesn't belong here.
– orlp
Jun 30 '12 at 18:11
...
How to set Java environment path in Ubuntu
... java
java: /usr/bin/java /usr/share/java /usr/share/man/man1/java.1.gz
Now dig deeper-
$ ls -l /usr/bin/java
lrwxrwxrwx 1 root root 46 Aug 25 2018 /etc/alternatives/java -> /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
Dig deeper:
$ ls -l /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
...
How does collections.defaultdict work?
...
How do we know what is the default value for each type? 0 for int() and [] for list() are intuitive, but there can also be more complex or self-defined types.
– Sean
Mar 11 at 10:40
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How can I convert a DateTime to the number of seconds since 1970?
...e, there's a really convenient feature:
long unixSeconds = DateTimeOffset.Now.ToUnixTimeSeconds();
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VS2010 and IE10 Attaching the Script debugger to process iexplore.exe failed
...o debug my site. I also updated VS2012 to SP1 and restarted my machine and now VS2010 debugging works fine in IE10.
So try installing VS2012 SP1 to fix compatibility issues with VS2010 & IE10.
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Show and hide a View with a slide up/down animation
...rstanding an applying the accepted answer. I needed a little more context. Now that I have figured it out, here is a full example:
MainActivity.java
public class MainActivity extends AppCompatActivity {
Button myButton;
View myView;
boolean isUp;
@Override
protected void on...
Using IntelliJ to amend git commit message
... This answer is no longer true since 2017.2. You can do it easily now : Version Control panel > Log tab > select last commit > press F2. jetbrains.com/idea/whatsnew/#v2017-2-version-control
– DLight
Feb 26 '18 at 10:41
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Simple argparse example wanted: 1 argument, 3 results
... excellent I'm sure, is too much for my tiny beginner brain to grasp right now. I don't need to do math on the command line or meddle with formatting lines on the screen or change option characters. All I want to do is "If arg is A, do this, if B do that, if none of the above show help and quit" .
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