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Is it possible to get all arguments of a function as single object inside that function?
...t an "Object which has a length property of a non-negative Integer, and usually some indexed properties." From the mozilla link: "It is similar to an Array, but does not have any Array properties except length."
– Luke
Aug 7 '17 at 13:09
...
How to truncate a foreign key constrained table?
...ata integrity.
Option 1:
Remove constraints
Perform TRUNCATE
Delete manually the rows that now have references to nowhere
Create constraints
Option 2: suggested by user447951 in their answer
SET FOREIGN_KEY_CHECKS = 0;
TRUNCATE table $table_name;
SET FOREIGN_KEY_CHECKS = 1;
...
CSS background image alt attribute
This is one I have not had to tackle before. I need to use alt tags on all images in a site including those used by CSS background-image attribute.
...
List All Redis Databases
...
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
...
C++ - passing references to std::shared_ptr or boost::shared_ptr
...now that sp->do_something() will not blow up due to a null pointer?
It all depends what is in those '...' sections of the code. What if you call something during the first '...' that has the side-effect (somewhere in another part of the code) of clearing a shared_ptr to that same object? And wha...
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.
...
Print all but the first three columns
...lt;=NF;i++)$(i-(n-1))=$i;NF=NF-(n-1);print $0}' n=4 | tr ' ' '-'
4-5-6-7
All other answers before Sep-2013 are nice but add extra spaces:
Example of answer adding extra leading spaces:
$ echo '1 2 3 4 5 6 7' |
awk '{$1=$2=$3=""}1' |
tr ' ' '-'
---4-5-6-7
Example of answer adding extra t...
How to have TFS 2010 detect changes done to files outside of Visual Studio?
...when you're working and you don't have a network connection available that allows you to check out the files.
If you know what files you've modified, you can just check them out from within Visual Studio, then you'll be able to check them back in.
If you don't know what files you've edited, you ca...
How do you stash an untracked file?
...
To stash your working directory including untracked files (especially those that are in the .gitignore) then you probably want to use this cmd:
git stash --include-untracked
More details:
Update 17 May 2018:
New versions of git now have git stash --all which stashes all files, includin...
Why is null an object and what's the difference between null and undefined?
...nown what the value is.
One thing to remember is that null is not, conceptually, the same as false or "" or such, even if they equate after type casting, i.e.
name = false;
You: What is name?
JavaScript: Boolean false.
name = '';
You: What is name?
JavaScript: Empty string
*: name in this context...