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How to validate an e-mail address in swift?
...
let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
return emailPred.evaluate(with: email)
}
for versions of Swift earlier than 3.0:
func isValidEmail(email: String) -> Bool {
let emailRe...
How to redirect output of an already running process [duplicate]
...e handles it has open:
$ ls -l /proc/6760/fd
total 3
lrwx—— 1 rjc rjc 64 Feb 27 15:32 0 -> /dev/pts/5
l-wx—— 1 rjc rjc 64 Feb 27 15:32 1 -> /tmp/foo1
lrwx—— 1 rjc rjc 64 Feb 27 15:32 2 -> /dev/pts/5
Now run GDB:
$ gdb -p 6760 /bin/cat
GNU gdb 6.4.90-debian
[license stuf...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
...ses a multiplicative linear congruential generator (MLCG) with c=0 and m=2^64. (The modulus 2^64 is implicitly given by the overflow of 64bit long integers)
Because of the zero c and the power-of-2-modulus, the "quality" (cycle length, bit-correlation, ...) is limited. As the paper says, besides the...
/data/user/0/xxxx/files（内部存储）和 /storage/emulated/0/Android/data...
...rage/emulated/0/Android/data/xxxx/files（外部存储的私有目录）都是应用的私有存储空间，但它们在存储位置、访问方式、权限要求等方面有显著区别。以下是详细对比：1. 存储位置与物理路径[td]目录类型路径示例存储介质内部存储私...
How to update Python?
...ow, these answers are for the same bit-versions, and by bit-version I mean 64-bit vs. 32-bit. For example, these answers would apply to updating from 64-bit Python-2.7.10 to 64-bit Python-2.7.11, ie: the same bit-version. While it is possible to install two different bit versions of Python together,...
How to get a list of MySQL views?
...---------+------+-----+---------+-------+
| TABLE_CATALOG | varchar(64) | YES | | NULL | |
| TABLE_SCHEMA | varchar(64) | YES | | NULL | |
| TABLE_NAME | varchar(64) | YES | | NULL ...
How can I find which tables reference a given table in Oracle SQL Developer?
...the only operand of OR which evaluates to true.
– Gab是好人
Dec 29 '16 at 20:27
add a comm...
R memory management / cannot allocate vector of size n Mb
...eate the object you need in one session.
If the above cannot help, get a 64-bit machine with as much RAM as you can afford, and install 64-bit R.
If you cannot do that there are many online services for remote computing.
If you cannot do that the memory-mapping tools like package ff (or bigmem...
Hexadecimal To Decimal in Shell Script
...nteger overflow error, e.g. echo $((077E9F2DBF49D100001#FF)) overflows the 64-bit integer limit of 2^64. bc handles this properly.
– roblogic
May 2 '18 at 1:04
...
What is the difference between Digest and Basic Authentication?
...d the requested URI.
Whereas Basic Authentication uses non-encrypted base64 encoding.
Therefore, Basic Authentication should generally only be used where transport layer security is provided such as https.
See RFC-2617 for all the gory details.
...