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How to determine whether an object has a given property in JavaScript
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Object has property:
If you are testing for properties that are on the object itself (not a part of its prototype chain) you can use .hasOwnProperty():
if (x.hasOwnProperty('y')) {
// ......
}
Object or its prototype has a property:
You ca...
How to sort an array of integers correctly
Trying to get the highest and lowest value from an array that I know will contain only integers seems to be harder than I thought.
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Can I obtain method parameter name using Java reflection?
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I don't know if they changed the arguments for the compiler plugin, but with the latest (3.5.1 as of now) I had to do to use compiler args in the configuration section: <configuration> <compilerArgs> <arg>-pa...
qmake: could not find a Qt installation of ''
...t4-qmake' instead of 'qmake' (I found both of them in the directory path). Now its working :)
– Curious
May 17 '13 at 12:00
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What is an existential type?
...X they're saying: You can plug in whatever type you want, I don't need to know anything about the type to do my job, I'll only refer to it opaquely as X.
When someone defines an existential type ∃X they're saying: I'll use whatever type I want here; you wont know anything about the type, so you c...
Find and Replace text in the entire table using a MySQL query
...find to replace text in a MySQL database using phpmyadmin. I'm tired of it now, how can I run a query to find and replace a text with new text in the entire table in phpmyadmin?
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Renaming a virtualenv folder without breaking it
...table option. From the docs:
Normally environments are tied to a
specific path. That means that you
cannot move an environment around or
copy it to another computer. You can
fix up an environment to make it
relocatable with the command:
$ virtualenv --relocatable ENV
NOTE: EN...
What is the difference between MOV and LEA?
I would like to know what the difference between these instructions is:
12 Answers
12
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How to initialize a vector in C++ [duplicate]
... give you the beginning and end of an array:
template <typename T, size_t N>
T* begin(T(&arr)[N]) { return &arr[0]; }
template <typename T, size_t N>
T* end(T(&arr)[N]) { return &arr[0]+N; }
And then you can do this without having to repeat the size all over:
int vv[]...
Comments in Android Layout xml
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If you are using Eclipse, you can open the XML file, place the cursor where you want the comment, the choose from the top menu Source -> Add Block Comment. Also, "ctrl + shft + /" (that is, hold control and the shift key t...