大约有 23,000 项符合查询结果（耗时：0.0360秒） [XML]
C# 4 default parameter values: How to assign a default DateTime/object value? [duplicate]
...
private System.String _Date= "01/01/1900";
public virtual System.String Date
{
get { return _Date; }
set { _Date= value; }
}
We can assign value to a label like given below,
lblDate.Text = Date;
Also we can get the value,
DateTi...
How to set -source 1.7 in Android Studio and Gradle
...w use features like the diamond operator, multi-catch, try-with-resources, strings in switches, etc. Add the following to your build.gradle.
android {
compileSdkVersion 19
buildToolsVersion "19.0.0"
defaultConfig {
minSdkVersion 7
targetSdkVersion 19
}
compileO...
What are Runtime.getRuntime().totalMemory() and freeMemory()?
...ailable in jvm.
public class MemoryTest {
public static void main(String args[]) {
System.out.println("Used Memory : " + (Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) + " bytes");
System.out.println("Free Memory : " + Runtime.g...
Nullable types and the ternary operator: why is `? 10 : null` forbidden? [duplicate]
.... My requirement was to pass null to an Oracle table number column, when a string is NULL. Against the example above, I managed it like this: cmd.Parameters.Add("2", OracleDbType.Double).Value = String.IsNullOrEmpty(pNumberChar) ? (Double?)null : Convert.ToDouble(pNumberChar);
–...
Determine the type of an object?
...t question, don't use type - use isinstance:
def foo(obj):
"""given a string with items separated by spaces,
or a list or tuple,
do something sensible
"""
if isinstance(obj, str):
obj = str.split()
return _foo_handles_only_lists_or_tuples(obj)
This covers the cas...
Does a “Find in project…” feature exist in Eclipse IDE?
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Ctrl + H is the best way!
Remember to copy the string before you start searching!
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Adding dictionaries together, Python [duplicate]
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The first line fails if the keys are anything other than strings.
– Flimm
Mar 14 '16 at 15:49
1
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How to read/write a boolean when implementing the Parcelable interface?
...t generates the following:
public class YourClass implements Parcelable{
String someString;
int someInt;
boolean someBoolean;
List<String> someList;
protected YourClass(Parcel in) {
someString = in.readString();
someInt = in.readInt();
someBoolean = in.readByte() != 0;
someL...
Delete files older than 3 months old in a directory using .NET
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Something like this outta do it.
using System.IO;
string[] files = Directory.GetFiles(dirName);
foreach (string file in files)
{
FileInfo fi = new FileInfo(file);
if (fi.LastAccessTime < DateTime.Now.AddMonths(-3))
fi.Delete();
}
...
Getting the last element of a list
...at should happen when attempting to get an element from an empty list. For Strings astr[-1:] could be a valid approach since it returns the same type as astr[-1], but I don't think the ':' helps to deal with empty lists (and the question is about lists). If the idea is to use "alist[-1:]" as a condi...