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Difference between Inheritance and Composition
...ing with class X. If anything changes in superclass X , Y may break dramatically. Suppose In future class X implements a method work with below signature
public int work(){
}
Change is done in class X but it will make class Y uncompilable. SO this kind of dependency can go up to any level and it ...
How to get the command line args passed to a running process on unix/linux systems?
...
There are several options:
ps -fp <pid>
cat /proc/<pid>/cmdline | sed -e "s/\x00/ /g"; echo
There is more info in /proc/<pid> on Linux, just have a look.
On other Unixes things might be different. The ps command will work everywhere, the /proc...
What's the difference between window.location and document.location in JavaScript?
...they are same, then describes the differences in lighter text. They are decidedly not same.
– danorton
Feb 7 '12 at 1:47
35
...
Automatically enter SSH password with script
...r script so you can share your script with others worry-free, and later decide to enable encryption on your ~/.ssh folder without also encrypting your script.
– Alexander Taylor
Oct 30 '14 at 0:33
...
How to check if an object is nullable?
...ng the obj parameter purely for generic type inference (to make it easy to call) - it would work almost identically without the obj param, though.
static bool IsNullable<T>(T obj)
{
if (obj == null) return true; // obvious
Type type = typeof(T);
if (!type.IsValueType) return true;...
Get local IP address
...output;
}
Now to get the IPv4 address of your Ethernet network interface call:
GetLocalIPv4(NetworkInterfaceType.Ethernet);
Or your Wireless interface:
GetLocalIPv4(NetworkInterfaceType.Wireless80211);
If you try to get an IPv4 address for a wireless interface, but your computer doesn't have...
Cannot use a CONTAINS or FREETEXT predicate on table or indexed view because it is not full-text ind
...escription(Description)
key index PK_ProductDescription_ProductDescriptionID
Before you create the index, make sure:
- you don't already have full-text search index on the table as only one full-text search index allowed on a table
- a unique index exists on the table. The index must be...
“FOUNDATION_EXPORT” vs “extern”
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
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How to check if a map contains a key in Go?
...t
var ok bool
seconds, ok = timeZone[tz]
For obvious reasons this is called the “comma ok” idiom. In this
example, if tz is present, seconds will be set appropriately and ok
will be true; if not, seconds will be set to zero and ok will be
false. Here's a function that puts it togethe...
What reason is there to use null instead of undefined in JavaScript?
...at undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ?
...