大约有 31,100 项符合查询结果（耗时：0.0662秒） [XML]
Search and replace in bash using regular expressions
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Use sed:
MYVAR=ho02123ware38384you443d34o3434ingtod38384day
echo "$MYVAR" | sed -e 's/[a-zA-Z]/X/g' -e 's/[0-9]/N/g'
# prints XXNNNNNXXXXNNNNNXXXNNNXNNXNNNNXXXXXXNNNNNXXX
Note that the subsequent -e's are processed in order. Also, ...
Check play state of AVPlayer
...y. A more reliable way for me is to track AVPlayer's status using KVO. See my answer below for more details: stackoverflow.com/a/34321993/3160561
– maxkonovalov
Dec 16 '15 at 21:04
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How can I get a count of the total number of digits in a number?
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@Puterdo Borato: my performance test actually showed that your method is faster when the number of digits are < 5. Pass that, Steve's Math.floor is faster.
– stack247
Apr 7 '15 at 22:56
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How to convert an Stream into a byte[] in C#? [duplicate]
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Call next function like
byte[] m_Bytes = StreamHelper.ReadToEnd (mystream);
Function:
public static byte[] ReadToEnd(System.IO.Stream stream)
{
long originalPosition = 0;
if(stream.CanSeek)
{
originalPosition = stream.Position;
stre...
Change type of varchar field to integer: “cannot be cast automatically to type integer”
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My statement: ALTER TABLE "tblMenus" ALTER COLUMN "MID" USING (trim("MID")::integer);
– itsols
Nov 1 '12 at 4:08
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How to encode a URL in Swift [duplicate]
This is my URL .
13 Answers
13
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What is an alternative to execfile in Python 3?
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+1 for using compile. My "somefile.py" contained inspect.getsourcefile(lambda _: None) which was failing without the compile, because the inspect module couldn't determine where the code was coming from.
– ArtOfWarfare
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Is it feasible to do (serious) web development in Lisp? [closed]
...he "biggest issue", but right before that he said "reddit would not run on my Mac"; at the time, there was only one threaded CL for the Mac, which couldn't run their low-level socket code. That sounds like at least as much of a dealbreaker.
– Ken
Feb 17 '09 at...
Are Java static initializers thread safe?
...g a static code block to initialize some controllers in a registry I have. My question is therefore, can I guarantee that this static code block will only absolutely be called once when the class is first loaded? I understand I cannot guarantee when this code block will be called, I'm guessing its w...
How to Generate unique file names in C#
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If readability doesn't matter, use GUIDs.
E.g.:
var myUniqueFileName = string.Format(@"{0}.txt", Guid.NewGuid());
or shorter:
var myUniqueFileName = $@"{Guid.NewGuid()}.txt";
In my programs, I sometimes try e.g. 10 times to generate a readable name ("Image1.png"…"Image1...