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Differences between strong and weak in Objective-C
I'm new to Obj-C, so my first question is:
9 Answers
9
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Why does calling a method in my derived class call the base class method?
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There's a difference between new and virtual/override.
You can imagine, that a class, when instantiated, is nothing more than a table of pointers, pointing to the actual implementation of its methods. The following image should visualize this pretty we...
How can I check if character in a string is a letter? (Python)
...l = function(e) {
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
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How to find the created date of a repository project on GitHub?
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You can also use Github's new GraphQL API:
query {
repository(owner: "graphql", name: "graphql-js") {
name
createdAt
}
}
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Is the practice of returning a C++ reference variable evil?
...referring to nothing. This is also evil:
int& getInt() {
int* i = new int;
return *i; // DON'T DO THIS.
}
Because now the client has to eventually do the strange:
int& myInt = getInt(); // note the &, we cannot lose this reference!
delete &myInt; // must delete.....
What is the difference between customErrors and httpErrors?
...isual Studio Development Server (aka. VSDS or Cassini).
httpErrors are the new element which is only used by IIS7.
This highlights the possible problem when developing ASP.NET websites while using VSDS instead of the local IIS.
Also, refer to this post by myself about how to handle error messages wi...
How to design a database for User Defined Fields?
...ruly dynamic custom fields is to store them in a blob of XML, so I can add new fields at any time. But to make it speedy, also create additional tables for each field you need to search or sort on (you don't a table per field--just a table per searchable field). This is sometimes called an inverte...
Is there a way to select sibling nodes?
...and previous you can get the whole picture. that's answer comes to show a new way to do things. and contribute something to readers. just to go parent and go each element and filter the current one everyone can do
– pery mimon
Sep 24 '17 at 15:08
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How can I monitor the thread count of a process on linux?
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try
ps huH p <PID_OF_U_PROCESS> | wc -l
or htop
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What's an object file in C?
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