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Need a simple explanation of the inject method
...r simple example to create a hash from an array of objects, keyed by their string representation:
[1,"a",Object.new,:hi].inject({}) do |hash, item|
hash[item.to_s] = item
hash
end
In this case, we are defaulting our accumulator to an empty hash, then populating it each time the block executes...
Java 8 Distinct by property
...r solution, using Set. May not be the ideal solution, but it works
Set<String> set = new HashSet<>(persons.size());
persons.stream().filter(p -> set.add(p.getName())).collect(Collectors.toList());
Or if you can modify the original list, you can use removeIf method
persons.removeIf...
Set initial focus in an Android application
In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing?
...
Python Selenium accessing HTML source
...diate and clear way to do this, much more compact that the other, still valid, alternative (find_element_by_xpath("//*").get_attribute("outerHTML")(
– 5agado
Mar 28 '14 at 14:16
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How to move a file?
...edit. Also, its best to use os.path.join(parent_path, filename) instead of string concatenation to avoid cross-platform issues
– iggy12345
Mar 20 '19 at 21:13
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I want to delete all bin and obj folders to force all projects to rebuild everything
...flag to test first, so I ended up with this: $foldersToRemove='bin','obj';[string[]]$foldersToIgnore='ThirdParty';Get-ChildItem .\ -Include $foldersToRemove -Recurse|Where-Object{$_.FullName -inotmatch "\\$($foldersToIgnore -join '|')\\"}|Remove-Item -Force -Recurse -WhatIf (a bit messy here as one ...
How to check if click event is already bound - JQuery
...led "handler". I modified it to use a simple for statement and checked for string equivalence, what I'm assume inArray did. for (var i = 0; i < data.length; i++) { if (data[i].handler.toString() === fn.toString()) { return true; } }
– Robb Vandaveer
Jan 10 '...
如何查看Oracle用户的SQL执行历史记录？ - 数据库(内核) - 清泛网 - 专注C/...
...取样数据，按秒进行，只有在那一秒采样点处于on cpu或非idle等待的session统计在内。所以可能会不全，有些执行很短的SQL会忽略。这个视图无法还原完整的session历史。
#v$sqlarea中有执行过的SQL语句，但并无到session的关联信息，v$...
Brew doctor says: “Warning: /usr/local/include isn't writable.”
... @WillemLabu one less process fork? whoami is effective user id and as the man page says is obsolete :) bash is default shell on OSX and somewhere USER is getting set.
– jrwren
Mar 5 '14 at 18:54
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CURL alternative in Python
...wrap this in a script and run it from a terminal you can pipe the response string to 'mjson.tool' to enable pretty printing.
>> basicAuth.py | python -mjson.tool
One last thing to note, urllib2 only supports GET & POST requests.
If you need to use other HTTP verbs like DELETE, PUT, etc...