大约有 10,900 项符合查询结果（耗时：0.0246秒） [XML]
What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...eturns another hash that contains only the permitted key AND (this is critical) will respond with true to the permitted? method. By default, an instance of the ActionController::Parameters class will return false for permitted? Responding true to permitted? means the parameter object can be used in ...
In Xcode, how to suppress all warnings in specific source files?
In my application I use 3rd party code that triggers some warnings. I reviewed them and they can be safely ignored.
3 Answe...
Join strings with a delimiter only if strings are not null or empty
...y if I'm missing something here, but I'm trying to find a simple way to concatenate only non-null or non-empty strings.
7 A...
Converting an integer to a hexadecimal string in Ruby
...
You can give to_s a base other than 10:
10.to_s(16) #=> "a"
Note that in ruby 2.4 FixNum and BigNum were unified in the Integer class.
If you are using an older ruby check the documentation of FixNum#to_s and BigNum#to_s...
Using Moq to determine if a method is called
It is my understanding that I can test that a method call will occur if I call a higher level method, i.e.:
3 Answers
...
How to find out what group a given user has?
... format.
sh collection.sh
#!/bin/bash
HOSTNAME=`hostname -s`
for i in `cat /etc/passwd| grep -vE "nologin|shutd|hal|sync|root|false"|awk -F':' '{print$1}' | sed 's/[[:space:]]/,/g'`; do groups $i; done|sed s/\:/\,/g|tr -d ' '|sed -e "s/^/$HOSTNAME,/"> /tmp/"$HOSTNAME"_inventory.txt
sudo cat ...
How to iterate through a DataTable
... object model.
DataTable -> DataRowCollection -> DataRow (which one can use & look for column contents for that row, either using columnName or ordinal).
-> = contains.
share
|
improv...
MySQL Query - Records between Today and Last 30 Days
...atabase within the last 30 days. I need to convert the date to mm/dd/yy because of display purposes.
6 Answers
...
Retrieve only static fields declared in Java class
...
You can do it like this:
Field[] declaredFields = Test.class.getDeclaredFields();
List<Field> staticFields = new ArrayList<Field>();
for (Field field : declaredFields) {
if (java.lang.reflect.Modifier.isStatic(fi...
Why java.io.File doesn't have a close() method?
...() method java.io.File doesn't. Why is that? Is the file closed automatically on finalization or something?
5 Answers
...