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普通码农和CTO之间的差距，就是这7点了 - 杂谈 - 清泛网 - 专注C/C++及内核技术
...各种“喷子”从“性能”、“道德”、“微软很坏”、“PHP是最好的”等各种无厘头开喷。这似乎是程序员们的通病，对于一个自己没有好感的东西（比如：国产或者微软，这两个最容易拉仇恨）会各种毫无理性的嘲讽。这种狭...
Ruby on Rails - Import Data from a CSV file
...nation of attributes that form a primary key, use that as the selector. No index is necessary, it will just make it faster.
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Short circuit Array.forEach like calling break
...irefox 1.5 also works really well. My example use case will be to find the index in an array of ranges[a,b] where a number is between a lower boundary and upper boundary pair, test and return true when found. for..of would be the next best solution though only for newer browsers.
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examining history of deleted file
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When you want to look at old files you really should know the difference between:
svn cat http://server/svn/project/file -r 1234
and
svn cat http://server/svn/project/file@1234
The first version looks at the path that is now available as http://server/svn/proj...
When saving, how can you check if a field has changed?
...value went from the base
new._loaded_remote_image = values[field_names.index('remote_image')]
return new
def save(self, force_insert=False, force_update=False, using=None,
update_fields=None):
if (self._state.adding and self.remote_image) or \
(not self._state.adding an...
In .NET, which loop runs faster, 'for' or 'foreach'?
...wer in general, but foreach becomes significantly slower than accessing by index. Having said that, I would still almost always prefer foreach to a for loop where it makes the code simpler - because readability is almost always important, whereas micro-optimisation rarely is.
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how to use python to execute a curl command
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It seems there's a small typo in the headers, which should read 'Accept-Charset': 'UTF-8'
– Stephen Lead
Feb 4 '16 at 2:25
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How to get the name of the calling method?
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Excellent use of regex as a string index! Can also use caller[0][/`(.*)'/,1]
– aks
Dec 23 '17 at 5:36
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How do you make sure email you send programmatically is not automatically marked as spam?
...these accounts exist, read what's sent to them, and act on complaints.
Finally, make it really easy to unsubscribe. Otherwise, your users will unsubscribe by pressing the spam button, and that will affect your reputation.
That said, getting Hotmail to accept your emails remains a black art.
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Rails 3 migrations: Adding reference column?
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remember to add the index with user:integer:index
– rickypai
Dec 1 '12 at 17:40
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