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What is the preferred/idiomatic way to insert into a map?
... int m_i;
};
int main() {
std::map<int, MyClass> myMap;
// VS2017: "C2512: 'MyClass::MyClass' : no appropriate default constructor available"
// Coliru: "error: no matching function for call to 'MyClass::MyClass()"
myMap[0] = MyClass(1);
return 0;
}
However, if you rep...
Android: Difference between Parcelable and Serializable?
...
Parcelable vs Serializable I refer these two.
For Java and Kotlin
1) Java
Serializable, the Simplicity
What is Serializable?
Serializable is a standard Java interface. It is not a part of the
Android SDK. Its simplicity is...
Python (and Python C API): __new__ versus __init__
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The difference mainly arises with mutable vs immutable types.
__new__ accepts a type as the first argument, and (usually) returns a new instance of that type. Thus it is suitable for use with both mutable and immutable types.
__init__ accepts an instance as the fir...
What are some examples of commonly used practices for naming git branches? [closed]
I've been using a local git repository interacting with my group's CVS repository for several months, now. I've made an almost neurotic number of branches, most of which have thankfully merged back into my trunk. But naming is starting to become an issue. If I have a task easily named with a simp...
MyISAM versus InnoDB [closed]
...
People often talk about performance, reads vs. writes, foreign keys, etc. but there's one other must-have feature for a storage engine in my opinion: atomic updates.
Try this:
Issue an UPDATE against your MyISAM table that takes 5 seconds.
While the UPDATE is in p...
How does the Java 'for each' loop work?
... foreach can (will?) result in a ConcurrentModificationException.
foreach vs. for: Basic differences
The only practical difference between for and foreach is that, in the case of indexable objects, you do not have access to the index. An example when the basic for loop is required:
for(int i = 0;...
What is the difference between .text, .value, and .value2?
... they are slower than .Value2
For a more extensive discussion see my Text vs Value vs Value2
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In a PHP project, what patterns exist to store, access and organize helper objects? [closed]
...Here's a recent post from 'uncle Bob' (Robert Martin) discussing manual DI vs using framework.
Some more thoughts on Flavius's solution. I don't want this post to be an anti-post but I think it's important to see why dependency injection is, at least for me, better than globals.
Even though it i...
Truncating long strings with CSS: feasible yet?
...s (see the Applies To section at msdn.microsoft.com/en-us/library/ms531174(VS.85).aspx).
– Simon Lieschke
Apr 10 '10 at 2:08
...
JavaScript get clipboard data on paste event (Cross browser)
.../paste
MSDN clipboard: https://msdn.microsoft.com/en-us/library/ms535220(v=vs.85).aspx
MDN DocumentFragment: https://developer.mozilla.org/en/docs/Web/API/DocumentFragment
MDN DomStringList: https://developer.mozilla.org/en/docs/Web/API/DOMStringList
Thanks to Tim Down to suggesting the use of a Do...