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...型的三种选择
121 MBA 的几个问题
122 一个假设换回18 万
123 公司对我有恩，离职怎么说得出口
125 找马时，我被“驴”发现了
126 被“驴”开除的Ivy
127 被“驴”加薪留下的Lion
128 左右逢源的Jack
130 第10 章 职场政治
130 有人...
What's the difference between isset() and array_key_exists()? [duplicate]
...
123
Between array_key_exists and isset, though both are very fast [O(1)], isset is significantly f...
How to get record created today by rails activerecord?
...
123
I know this question has an accepted answer. The solution suggested in the accepted answer can...
Format decimal for percentage values?
...complete example:
using System.Globalization;
...
decimal myValue = -0.123m;
NumberFormatInfo percentageFormat = new NumberFormatInfo { PercentPositivePattern = 1, PercentNegativePattern = 1 };
string formattedValue = myValue.ToString("P2", percentageFormat); // "-12.30%" (in en-us)
...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... passing it to the filter.
Another benchmark with more columns:
set.seed(123)
x <- sample(1e5,1e5*26, replace = TRUE)
x[sample(seq_along(x), 1e3)] <- NA
df <- as.data.frame(matrix(x, ncol = 26))
library(microbenchmark)
microbenchmark(
na.omit = {df %>% na.omit},
filter.anonymous = ...
How to dynamically create CSS class in JavaScript and apply?
...ate dynamic css stylesheets.
$.injectCSS({
"#test": {
height: 123
}
});
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Git / Bower Errors: Exit Code # 128 & Failed connect
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123
I know this is not "fixing" the problem, but you can use
git config --global url."https://".i...
Unable to show a Git tree in terminal
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123
git log --oneline --decorate --all --graph
A visual tree with branch names included.
Use th...
Skip certain tables with mysqldump
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123
Building on the answer from @Brian-Fisher and answering the comments of some of the people on ...
Express next function, what is it really for?
...listening on port 3000!')
});
If you do
curl http://localhost:3000/user/123
you will see this printed to console:
before request handler
handling request
after request handler
Now if you comment out the call to next() in the middle handler like this:
app.get('/user/:id', function (req, res,...