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Rails Root directory path?
...
which returns a Pathname object. If you want a string you have to add .to_s. If you want another path in your Rails app, you can use join like this:
Rails.root.join('app', 'assets', 'images', 'logo.png')
In Rails 2 you can use the RAILS_ROOT constant, which is a string.
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Regular expression to match URLs in Java
...placeholder.
String regex = "^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
This works too:
String regex = "\\b(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]";
Note:
String regex = "<\\b(https?|ftp|file)://[-a-zA-Z0-9+&am...
How to manage local vs production settings in Django?
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In settings.py:
try:
from local_settings import *
except ImportError as e:
pass
You can override what needed in local_settings.py; it should stay out of your version control then. But since you mention copying I'm guessing you use none ;)
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How do I set a conditional breakpoint in gdb, when char* x points to a string whose value equals “he
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This method can have side effects. $_streq method from @tlwhitec is better.
– rools
Apr 14 '19 at 14:08
add a comment
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How can I get the behavior of GNU's readlink -f on a Mac?
...in your own script where you'd like to call readlink -f
#!/bin/sh
TARGET_FILE=$1
cd `dirname $TARGET_FILE`
TARGET_FILE=`basename $TARGET_FILE`
# Iterate down a (possible) chain of symlinks
while [ -L "$TARGET_FILE" ]
do
TARGET_FILE=`readlink $TARGET_FILE`
cd `dirname $TARGET_FILE`
T...
Arduino101 伺服 · App Inventor 2 中文网
...服电机的旋转角度。有效值为0-180度。
参数:
* position (_number_) —
伺服电机的新位置(角度)。有效值为0-180度。
SetPositionMicros – 设置连续旋转型伺服电机每转所需时间(微秒)。对于标准
伺服电机，1000表示完全逆时针...
Converting XML to JSON using Python?
...nversion.
from xml.etree import ElementTree as ET
xml = ET.parse('FILE_NAME.xml')
parsed = parseXmlToJson(xml)
def parseXmlToJson(xml):
response = {}
for child in list(xml):
if len(list(child)) > 0:
response[child.tag] = parseXmlToJson(child)
else:
response[child.t...
JavaScript for detecting browser language preference [duplicate]
...e)],
debug=False)
def main():
run_wsgi_app(application)
if __name__ == "__main__":
main()
Edit3: Have open sourced the app engine code here: https://github.com/dansingerman/app-engine-headers
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Android Studio needs JDK 7 for Android-L mac
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Setting the directory to:
/Library/Java/JavaVirtualMachines/jdk1.7.0_60.jdk/Contents/Home
in JDK settings solved my issue. I had the same problem getting started up. Hope this helps!
share
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Difference between Node object and Element object?
...e various types of nodes here (diagram from MDN):
You can see an ELEMENT_NODE is one particular type of node where the nodeType property has a value of 1.
So document.getElementById("test") can only return one node and it's guaranteed to be an element (a specific type of node). Because of that ...