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What's the difference between lapply and do.call?
...last example supposed to be do.call(cbind, x) the current version gives me Error in do.call(c, x) : 'what' must be a function or character string...
– sindri_baldur
Jul 20 '17 at 20:45
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How to fix SSL certificate error when running Npm on Windows?
... package with npm, it doesn't work. After a long wait, I eventually get an error 'tunneling socket could not be established, sutatusCode=403'.
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How can I delete a newline if it is the last character in a file?
...hing that could be interpreted as a format specifier like %d, you'd get an error. A fix would be to change it to printf "%s" $0
– Robin A. Meade
Oct 11 '19 at 23:42
add a comm...
Regex to Match Symbols: !$%^&*()_+|~-=`{}[]:";'?,./
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The regular expression for this is really simple. Just use a character class. The hyphen is a special character in character classes, so it needs to be first:
/[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/]/
You also need to escape the other regular expressio...
final keyword in method parameters [duplicate]
... you're required to declare it final --otherwise it will result in compile error--, namely passing them through into anonymous classes. Basic example:
public FileFilter createFileExtensionFilter(final String extension) {
FileFilter fileFilter = new FileFilter() {
public boolean accept(F...
Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
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4、Ruby on Rails
# gem install rails
安装成功提示：
Successfully installed activesupport-2.3.3
Successfully installed activerecord-2.3.3
Successfully installed rack-1.0.0
Successfully installed actionpack-2.3.3
Successfully installed actionmailer-2.3.3
Su...
JavaScript post request like a form submit
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Python, Django and probably Flask users will see this error: "Forbidden (403). CSRF verification failed. Request aborted.", if creating a form from zero. In this case, you must pass the csrf token this way: post('/contact/', {name: 'Johnny Bravo', csrfmiddlewaretoken: $("#csrf...
Difference between two dates in Python
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I have this error on the console: type object 'datetime.datetime' has no attribute 'strptime'
– mauguerra
Dec 7 '11 at 18:00
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Python executable not finding libpython shared library
...tOS 7 minimal. It all worked fine on its own, but I saw the shared library error mentioned in this question when I tried running a simple CGI script:
tail /var/log/httpd/error_log
AH01215: /opt/rh/rh-python35/root/usr/bin/python: error while loading shared libraries: libpython3.5m.so.rh-python35-1....
Error in if/while (condition) {: missing Value where TRUE/FALSE needed
I received this error message:
3 Answers
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