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How to declare a type as nullable in TypeScript?
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All fields in JavaScript (and in TypeScript) can have the value null or undefined.
You can make the field optional which is different from nullable.
interface Employee1 {
name: string;
salary: number;
}
var a: Empl...
Converting Symbols, Accent Letters to English Alphabet
...e are thousands of characters in the Unicode chart and I want to convert all the similar characters to the letters which are in English alphabet.
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List All Redis Databases
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Or you can just run the following command and you will see all databases of the Redis instance without firing up redis-cli:
$ redis-cli INFO | grep ^db
db0:keys=1500,expires=2
db1:keys=200000,expires=1
db2:keys=350003,expires=1
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Active Record - Find records which were created_at before today
I want to get all records where the created_at field is less than today (a date).
Is there anything like:
4 Answers
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How to list of all the tables defined for the database when using active record?
How do I get a list of all the tables defined for the database when using active record?
5 Answers
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How to have Emacs auto-refresh all buffers when files have changed on disk?
...an my emacs buffers (en masse). Is there any way to tell emacs to refresh all the buffers from disk in one fell swoop, instead of having to do each one individually by reloading the file?
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How do you compare structs for equality in C?
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if the 2 structures variable are initialied with calloc or they are set with 0 by memset so you can compare your 2 structures with memcmp and there is no worry about structure garbage and this will allow you to earn time
– MOHAMED
Oct 3...
How can I remove specific rules from iptables?
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If you have several rules of a kind, it will not remove all of them.
– ETech
Mar 27 '14 at 8:22
4
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Are members of a C++ struct initialized to 0 by default?
...hot s; // receives no initialization
Snapshot s = {}; // value initializes all members
The second will make all members zero, the first leaves them at unspecified values. Note that it is recursive:
struct Parent { Snapshot s; };
Parent p; // receives no initialization
Parent p = {}; // value init...
combinations between two lists?
...aving trouble wrapping my head around a algorithm I’m try to make. Basically, I have two lists and want to get all the combinations of the two lists.
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