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How do I print a double value with full precision using cout?
...cision of a float or double.
#include <limits>
typedef std::numeric_limits< double > dbl;
double d = 3.14159265358979;
cout.precision(dbl::max_digits10);
cout << "Pi: " << d << endl;
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SQL Server indexes - ascending or descending, what difference does it make?
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This primarily matters when used with composite indexes:
CREATE INDEX ix_index ON mytable (col1, col2 DESC);
can be used for either:
SELECT *
FROM mytable
ORDER BY
col1, col2 DESC
or:
SELECT *
FROM mytable
ORDER BY
col1 DESC, col2
, but not for:
SELECT *
FROM ...
搜狗百度入口之争升级 开放竞合成流量变现抓手 - 资讯 - 清泛网 - 专注C/C+...
...端失效。反观之百度自收购91之后，又倾力打造14个亿级APP，Q3财报中显示百度移动营收占比为54%，而搜狗移动营收占比仅25%。并且百度作为PC搜索老大并未守旧，转型中根据移动搜索特性推出百度直达号、百度直通车等新模式，...
XAMPP - Port 80 in use by “Unable to open process” with PID 4! 12
...This worked for me too, except I exited out of everything, clicked on xampp_start in C:/xampp and then changed it to port 81. 8080 didn't work for me.
– user3553260
Oct 4 '16 at 20:41
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No Persistence provider for EntityManager named
...ger*.jar as stated in Ualter Jrs answer below. I am using a standalone GWT app with hibernate-core-4.3.7.jar, hibernate-entitymanager-4.3.7.Final.jar and hibernate-jpa-2.1-api-1.0.0.jar.
– Andreas Dietrich
Dec 15 '14 at 10:56
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How to create Windows EventLog source from command line?
I'm creating an ASP.NET application that will log some stuff to Windows EventLog. To do this an event source has to be created first. This requires administrative priviledges so I cannot do it in the ASP.NET app.
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Making a request to a RESTful API using python
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Using requests:
import requests
url = 'http://ES_search_demo.com/document/record/_search?pretty=true'
data = '''{
"query": {
"bool": {
"must": [
{
"text": {
"record.document": "SOME_JOURNAL"
}
},
{
...
Storing integer values as constants in Enum manner in java [duplicate]
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Well, you can't quite do it that way. PAGE.SIGN_CREATE will never return 1; it will return PAGE.SIGN_CREATE. That's the point of enumerated types.
However, if you're willing to add a few keystrokes, you can add fields to your enums, like this:
public enum PAGE{
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How to add a TextView to LinearLayout in Android
...al">
</LinearLayout>
this is Stackoverflow.java
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;
public class Stackoverflow extends Activity {
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How to copy from CSV file to PostgreSQL table with headers in CSV file?
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This worked. The first row had column names in it.
COPY wheat FROM 'wheat_crop_data.csv' DELIMITER ';' CSV HEADER
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