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常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...变）
git reset <file> #从暂存区恢复到工作区（不指定版本id，则默认为最后一次提交的版本id）
git reset . #从暂存区恢复到工作区
git reset $id # 恢复到指定的提交版本，该$id之后的版本提交都恢复到工作区
git reset --hard $id #恢复...
Is it possible to change the textcolor on an Android SearchView?
...
Add
<item name="android:editTextColor">@android:color/white</item>
to the parent theme and that should change the entered text. You can also use
<item name="android:textColorHint">@android:color/white</item>
to change th...
Curly braces in string in PHP
...interpolation. From the manual:
Complex (curly) syntax
This isn't called complex because the syntax is complex, but because
it allows for the use of complex expressions.
Any scalar variable, array element or object property with a string
representation can be included via this synt...
org.hibernate.MappingException: Could not determine type for: java.util.List, at table: College, for
...
You are using field access strategy (determined by @Id annotation). Put any JPA related annotation right above each field instead of getter property
@OneToMany(targetEntity=Student.class, mappedBy="college", fetch=FetchType.EAGER)
private List<Student> students;
...
SQL left join vs multiple tables on FROM line?
...ELECT * -- for simplicity
FROM Company, Department, Employee
WHERE Company.ID *= Department.CompanyID
AND Department.ID = Employee.DepartmentID
Note that the last one there is an inner join, in order to fulfill the criteria that you only want departments with people.
Ok, so what happens now. We...
Assert an object is a specific type
...correct answer. The original question was asking for something that specifically checks on the exact type of the object. This solutions does not that (as mentioned by @EircG above) and it has even been provided by the user originally asking the question, so definitely not the "correct" answer imo. ...
SQL SELECT speed int vs varchar
...your (say) 8-byte ints are longer than ascii varchars holding some textual IDs of avg length 3-4 chars. So, this answer - being imprecise and lacking any specific context or experimental results - doesn't really answer the question. Everyone knows that varchars are allowed to take much more space th...
Convert columns to string in Pandas
...
to_json() probably does not call astype(str) as it leaves datetime64 and its subclasses as milliseconds since epoch.
– Sussch
Jul 10 '19 at 5:41
...
Javascript Object push() function
...ects, so use the right data structure.
var data = [];
// ...
data[0] = { "ID": "1", "Status": "Valid" };
data[1] = { "ID": "2", "Status": "Invalid" };
// ...
var tempData = [];
for ( var index=0; index<data.length; index++ ) {
if ( data[index].Status == "Valid" ) {
tempData.push( dat...
How do I reflect over the members of dynamic object?
...r.
First of all, you need to check the type of your object. You can simply call GetType() for this.
If the type does not implement IDynamicMetaObjectProvider, then you can use reflection same as for any other object. Something like:
var propertyInfo = test.GetType().GetProperties();
However, for ...