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What's the difference between utf8_general_ci and utf8_unicode_ci?
...e rules for universal sorting and comparison, which sorts accurately in a wide range of languages.
utf8mb4_general_ci is a simplified set of sorting rules which aims to do as well as it can while taking many short-cuts designed to improve speed. It does not follow the Unicode rules and will result...
Convert a list of data frames into one data frame
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Use bind_rows() from the dplyr package:
bind_rows(list_of_dataframes, .id = "column_label")
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Add UIPickerView & a Button in Action sheet - How?
...o customize the contents of an ActionSheet, as it can lead to serious invalid context errors in iOS 7. I just spent a few hours working through this problem and ultimately decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a sim...
Unit testing with Spring Security
...a JUnit test, etc. The real limiting factor of a Singleton is when it provides an implementation that is inflexible to different environments.
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Proper URL forming with Query String and Anchor Hashtag
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?var=var#hash
everything after # is client side.
Also, look into url rewriting to get rid of ugly ?var=var
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Why do we declare Loggers static final?
...lf4j with jcabi-log:
import com.jcabi.log.Logger;
class Foo {
void save(File f) {
Logger.info(this, "file %s saved successfully", f);
}
}
And never use that static noise any more.
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Reactjs convert html string to jsx
... tutorial, but I just realized it's not documented anywhere else so I just filed #413 to fix.
– Sophie Alpert
Oct 9 '13 at 16:34
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Default text which won't be shown in drop-down list
...solution worked perfectly fine for me so I made my research in order to avoid any Js and CSS, but just sticking with HTML.
Adding a value of selected to the item we want to appear as a header forces it to show in the first place as a placeholder.
Something like:
<option selected disabled>Cho...
OpenSSH升级后不能登录的问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... 05:59:19 djm Exp $
# This is the sshd server system-wide configuration file. See
# sshd_config(5) for more information.
# This sshd was compiled with PATH=/usr/local/bin:/bin:/usr/bin
# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options...
How can a string be initialized using “ ”?
...uctor to construct the string, or you would have to read the string from a file.
– AJMansfield
Jul 5 '13 at 13:48
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