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What does new self(); mean in PHP?
...less used in a daemon-like program, the singleton will only live while the script runs and then disappear along with the program.
– ILikeTacos
Oct 16 '13 at 21:07
4
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How do I prevent site scraping? [closed]
...ation with a HTML parser to extract the desired data from each page.
Shell scripts: Sometimes, common Unix tools are used for scraping: Wget or Curl to download pages, and Grep (Regex) to extract the data.
HTML parsers, such as ones based on Jsoup, Scrapy, and others. Similar to shell-script regex b...
How can I list ALL DNS records?
...As I look after very many domains it would have been so nice just to run a script to get ALL the DNS entries.
– Ken
Oct 12 '13 at 8:48
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What are the differences between utf8_general_ci and utf8_unicode_ci? [duplicate]
...es in a wrong order.
utf8_unicode_ci is generally more accurate for all scripts.
For example, on Cyrillic block:
utf8_unicode_ci is fine for all these languages:
Russian, Bulgarian, Belarusian, Macedonian, Serbian, and Ukrainian.
While utf8_general_ci is fine only for Russian and Bulgarian su...
Error - trustAnchors parameter must be non-empty
...nd regenerate it in the manner described on the last row of the workaround script at the top of the post.
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Removing duplicate values from a PowerShell array
...single occurrences of a Row across said Columns, or develop an alternative script solution. Instead these cmdlets have only returned Rows in an Array that occurred ONCE with singular occurrence and dumped everything that had a duplicate. Typically I have to Remove Duplicates manually from the fina...
How do I check if a string is valid JSON in Python?
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Example Python script returns a boolean if a string is valid json:
import json
def is_json(myjson):
try:
json_object = json.loads(myjson)
except ValueError as e:
return False
return True
Which prints:
print is_json("{}") ...
curl: (60) SSL certificate problem: unable to get local issuer certificate
...Hello Server Hello, Certificate, Server Hello Done Alert (level : Fatal, Description: unknown CA (48)) Can you please guide me and help me out in this ?
– user3812540
Jul 8 '14 at 4:44
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Merge / convert multiple PDF files into one PDF
... PDF is far too big. For example: Pdfunite gives me a 75MB file while Ghostscript packs everything into 1MB.
– Torben
Dec 6 '13 at 11:58
69
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How to concatenate two MP4 files using FFmpeg?
...s/"P"/" file P"/g > mylist.txt which is even cooler than coding a batch script. Anyway, -c copy performs very quickly (which I was not aware of) and this is the real magic of this answer.
– Würgspaß
Oct 11 '18 at 18:17
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