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What's the difference between findAndModify and update in MongoDB?
I'm a little bit confused by the findAndModify method in MongoDB. What's the advantage of it over the update method? For me, it seems that it just returns the item first and then updates it. But why do I need to return the item first? I read the MongoDB: the definitive guide and it says that i...
Explain which gitignore rule is ignoring my file
Is there any way to see why some file is getting ignored by git (i.e. which rule in a .gitignore file is causing the file to be ignored)?
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How to simulate a click with JavaScript?
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Here's what I cooked up. It's pretty simple, but it works:
function eventFire(el, etype){
if (el.fireEvent) {
el.fireEvent('on' + etype);
} else {
var evObj = document.createEvent('Events');
evObj.initEvent(etype, true, false);
e...
Possible heap pollution via varargs parameter
I understand this occurs with Java 7 when using varargs with a generic type;
5 Answers
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Using smart pointers for class members
...tr / weak_ptr work in general. What I don't understand is the real usage. It seems like everybody recommends using unique_ptr as the way to go almost all the time. But how would I implement something like this:
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Can I use Class.newInstance() with constructor arguments?
...follow
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edited Jun 29 '19 at 22:13
Lerk
37966 silver badges1818 bronze badges
answered O...
What does tree-ish mean in Git?
I'm very confused about how to use git archive .
6 Answers
6
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How are people managing authentication in Go? [closed]
...g like the following design:
create table User (
ID int primary key identity(1,1),
Username text,
FullName text,
PasswordHash text,
PasswordSalt text,
IsDisabled bool
)
create table UserSession (
SessionKey text primary key,
UserID int not null, -- Could have a hard "references User"
Logi...
What's so bad about in-line CSS?
When I see website starter code and examples, the CSS is always in a separate file, named something like "main.css", "default.css", or "Site.css". However, when I'm coding up a page, I'm often tempted to throw the CSS in-line with a DOM element, such as by setting "float: right" on an image. I get t...
GetType() can lie?
...etType() not be virtual really ensured that an object could not lie about its Type .
8 Answers
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