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“X does not name a type” error in C++
...is is okay, it's just a pointer;
// we can point to something without knowing how that something is defined
foo* fp;
// likewise, we can form a reference to it
void some_func(foo& fr);
// but this would be an error, as before, because it requires a definition
/* foo fo...
What's the bad magic number error?
...s -- this didn't directly help me figure out my problem, but it's nice to know the answer anyways!
– Noah
Feb 5 '09 at 3:36
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What is the purpose of Android's tag in XML layouts?
...e widget, you would have to use a layout.
Let's say that include1.xml has now two TextView: a layout has to be declared. Let's choose a LinearLayout.
include1.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/layout2"
android:layout_width...
Git Diff with Beyond Compare
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As @pClass mentions below, "bc3" is now an internal tool in newer versions of git. You should use a unique name, such as "beyondcompare3"
– Scott Wegner
Oct 26 '12 at 16:46
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Does ruby have real multithreading?
I know about the "cooperative" threading of ruby using green threads . How can I create real "OS-level" threads in my application in order to make use of multiple cpu cores for processing?
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Javascript library for human-friendly relative date formatting [closed]
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Since I wrote this answer, a well known library available is moment.js.
There are libraries available, but it is trivial to implement it yourself. Just use a handful of conditions.
Assume date is an instantiated Date object for the time you want to make a ...
Sort JavaScript object by key
...never matched implementation reality, and have officially become incorrect now that the ES6/ES2015 spec has been published.
See the section on property iteration order in Exploring ES6 by Axel Rauschmayer:
All methods that iterate over property keys do so in the same order:
First all ...
What's wrong with foreign keys?
...n get nice "on delete cascade" behavior, automatically cleaning up tables
knowing about the relationships between tables in the database helps the Optimizer plan your queries for most efficient execution, since it is able to get better estimates on join cardinality.
FKs give a pretty big hint on wh...
Do DOM tree elements with ids become global variables?
...ed elements as properties of the window object. This is doubly bad in that now you have to avoid naming your elements after any member of either the document or the window object you (or any other library code in your project) might want to use.
It also means that these elements are visible as glob...
Upgrading Node.js to latest version
So, I have Node.js installed and now when I tried to install Mongoosejs I got an error telling me that I don't have the needed version of Node.js (I have v0.4.11 and v0.4.12 is needed).
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