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What are CFI directives in Gnu Assembler (GAS) used for?
...lso there are wide varities of these ex., .cfi_startproc , .cfi_endproc etc.. more here .
4 Answers
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What is a mutex?
...sure that only one thread is allowed inside that area, using that resource etc.
How to use them is language specific, but is often (if not always) based on a operating system mutex.
Some languages doesn't need this construct, due to the paradigm, for example functional programming (Haskell, ML are...
Make a div fill the height of the remaining screen space
...nt taking up the rest screen. If so, this post may help, it works on IE7+, etc.
http://blog.stevensanderson.com/2011/10/05/full-height-app-layouts-a-css-trick-to-make-it-easier/
And here are some snippets from that post:
@media screen {
/* start of screen rules. */
/* Generic ...
What columns generally make good indexes?
...ata type that can be given some meaningful order, ie sorted (integer, date etc).
It does not matter if the data in a column is generally increasing. If you create an index on the column, the index will create it's own data structure that will simply reference the actual items in your table without...
What is the volatile keyword useful for?
...A is creating Singleton instance and just after creation, the CPU corrupts etc, all other threads will not be able to see the value of _instance as not null and they will believe it is still assigned null.
Why does this happen? Because reader threads are not doing any locking and until the writer...
How to count objects in PowerShell?
...re-Object; and returns a lot of other stuff -- like Average, Sum, Maximum, etc...
– BrainSlugs83
Apr 28 '17 at 18:48
...
The maximum value for an int type in Go
....MaxFloat64)
fmt.Printf("max float32= %+v\n", math.MaxFloat32)
// etc you can see more int the `math`package
}
Ouput :
max int64 = 9223372036854775807
max int32 = 2147483647
max int16 = 32767
min int64 = -9223372036854775808
min int32 = -2147483648
max flloat64= 1.7976931348623157e+308
m...
Get records with max value for each group of grouped SQL results
...the value for.
You avoid complicated subqueries that try to find the max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL ...
How to use OpenSSL to encrypt/decrypt files?
...se this if you need to send
data in the form of text format via email etc.
-salt
To use a salt (randomly generated) when encrypting. You always
want to use a salt while encrypting. This parameter is actually
redundant because a salt is used whether you use this or not
which is...
Passing a Bundle on startActivity()?
...a String. As value you can use the primitive data types int, float, chars, etc. We can also pass Parceable and Serializable objects from one activity to other.
Intent intent = new Intent(context, YourActivity.class);
intent.putExtra(KEY, <your value here>);
startActivity(intent);
Retrieving...