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unique object identifier in javascript
I need to do some experiment and I need to know some kind of unique identifier for objects in javascript, so I can see if they are the same. I don't want to use equality operators, I need something like the id() function in python.
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Filter data.frame rows by a logical condition
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I wonder if this works now? I wasn't able to subset dataframe based on condition in this way.
– Sumanth Lazarus
Oct 10 '19 at 11:47
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Generic List - moving an item within the list
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I know you said "generic list" but you didn't specify that you needed to use the List(T) class so here is a shot at something different.
The ObservableCollection(T) class has a Move method that does exactly what you want.
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How to retrieve all keys (or values) from a std::map and put them into a vector?
... @BenHymers but it is of use to anyone reading the question now, which is what SO is all about - not only helping the asker, but everyone else.
– Luchian Grigore
Dec 14 '13 at 1:16
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Simple (non-secure) hash function for JavaScript? [duplicate]
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That makes more sense to me now; previously you had something like hex_md5("message_digest") = "fb6cecc85a100197ae3ad68d1f9f2886", right? (Can't find the revision of your answer.)
– mjs
May 25 '11 at 10:31
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How do I create a crontab through a script
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This should be the accepted answer. Just need a way now to check if the one-liner I intend to add is already there or not...
– ChrisPrime
Dec 14 '14 at 7:12
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How do you debug MySQL stored procedures?
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Debugger for mysql was good but its not free. This is what i use now:
DELIMITER GO$
DROP PROCEDURE IF EXISTS resetLog
GO$
Create Procedure resetLog()
BEGIN
create table if not exists log (ts timestamp default current_timestamp, msg varchar(2048)) engine = myisam;
truncate ...
Ways to implement data versioning in MongoDB
...ake this change at the same time.
UPDATE: 2015-10
It looks like there is now a spec for handling JSON diffs. This seems like a more robust way to store the diffs / changes.
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What is the Linux equivalent to DOS pause?
...if it contains spaces. The key argument is only necessary if you want to know which key they pressed, in which case you can access it through $key.
If you are using Bash, you can also specify a timeout with -t, which causes read to return a failure when a key isn't pressed. So for example:
read -...
How to use Global Variables in C#?
...on't belong to any class).
This being said, the simplest approach that I know to mimic this feature consists in using a static class, as follows:
public static class Globals
{
public const Int32 BUFFER_SIZE = 512; // Unmodifiable
public static String FILE_NAME = "Output.txt"; // Modifiable...