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Rename Pandas DataFrame Index
...ust a gentle reminder that without "inplace =True", df1.rename would not really change anything.
– Sarah
Sep 29 '19 at 15:35
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App Inventor 2 UDP网络通信教程 - 发送和接收UDP数据包 · App Inventor 2 中文网
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if (contains_text(message, "DEVICE:")) {
var 设备名称 = replace_all(message, "DEVICE:", "")
var 设备信息 = join(设备名称, " (", senderAddress, ")")
if (not(is_in_list(设备信息, foundDevices))) {
add_items_to_list(foundDevices, 设备信息)
ListView_De...
C++, variable declaration in 'if' expression
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As of C++17 what you were trying to do is finally possible:
if (int a = Func1(), b = Func2(); a && b)
{
// Do stuff with a and b.
}
Note the use of ; of instead of , to separate the declaration and the actual condition.
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How to round to 2 decimals with Python?
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That is called bankers rounding. It rounds towards the even number. It's in the IEEE 754 standard for floating point numbers. en.wikipedia.org/wiki/Rounding#Round_half_to_even
– rolisz
Dec 9 '13...
Using TortoiseSVN via the command line
...ys has a GUI (Graphical User Interface) associated with it. But on the installer (of version 1.7 and later) you can select the "command line client tools" option so you can call svn commands (like svn commit and svn update) from the command line.
Here's a screenshot of the "command line client tool...
Clojure: reduce vs. apply
... the ultimate result returned) for associative functions which need to see all their arguments in the variable-arity case. When they are result-wise equivalent, I'd say that apply is always perfectly idiomatic, while reduce is equivalent -- and might shave off a fraction of a blink of an eye -- in a...
jQuery how to find an element based on a data-attribute value?
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in case you don't want to type all that, here's a shorter way to query by data attribute:
$("ul[data-slide='" + current +"']");
FYI:
http://james.padolsey.com/javascript/a-better-data-selector-for-jquery/
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How to disable textarea resizing?
I need to disable textarea horizontal resize. Sometimes I want to allow vertical resize on the textarea.
5 Answers
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Get environment variable value in Dockerfile
... Very nice solution! On a Mac you can get envsubst as part of brew install gettext. But because of possible conflicts with the BSD build system it is "keg-only" and no symlnks are made. However, it is safe to do ln -s /usr/local/Cellar/gettext/*/bin/envsubst /usr/local/bin/ to add that one comma...
Converting XML to JSON using Python?
... It's already been mentioned in newer answers. It still only covers a small subset of valid XML constructs, but probably the majority of what people use in practice.
– Dan Lenski
Dec 5 '18 at 11:48
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