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Why is reading lines from stdin much slower in C++ than Python?
...s to the top of your main, you should see much better performance:
std::ios_base::sync_with_stdio(false);
Normally, when an input stream is buffered, instead of reading one character at a time, the stream will be read in larger chunks. This reduces the number of system calls, which are typically r...
How to get city name from latitude and longitude coordinates in Google Maps?
...
try {
JSONObject jsonObj = parser_Json.getJSONfromURL("http://maps.googleapis.com/maps/api/geocode/json?latlng=" + Global.curLatitude + ","
+ Global.curLongitude + "&sensor=true&key=YOUR_API_KEY");
String Status = json...
MySQL Orderby a number, Nulls last
...ASC.
A good reference is here http://troels.arvin.dk/db/rdbms#select-order_by
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Debug Error \"pure virtual function call\" 原因解析 - 更多技术 - 清泛...
...
public:
virtual void virtualFunc(){}
};
Base* pB = new Derived;
__try
{
delete pB; // . . . b)
pB = NULL;
}
__except(EXCEPTION_EXECUTE_HANDLER){
}
pB->virtualFunc(); // . . . c)
在b)处析构Derived对象的时候，在其基类析构函数中a)处抛出了...
Why does this Java code compile?
...lps us again, these are JVM instruction generated for this code:
0: iconst_1 //load constant to stack
1: dup //duplicate it
2: istore_1 //set x to constant
3: istore_1 //set x to constant
more like:
int x = 1;
x = 1;
Here is no reason to throw undefined reference error. There ...
Kill detached screen session [closed]
...sion.
~$ screen -list
There are screens on:
20751.Melvin_Peter_V42 (Detached)
Note: 20751.Melvin_Peter_V42 is your session id.
Get attached to the detached screen session
screen -r 20751.Melvin_Peter_V42
Once connected to the session press Ctrl + A then type :quit
...
How to change the text of a label?
...d child pages. How I write in child pages. I write $('#contentPlaceHolderId_LabelID') it not works. I also change th ClientMode to Static but no work. Please help.
– Salman Mushtaq
Feb 17 '16 at 12:52
...
Disable all table constraints in Oracle
...m SQL*Plus or put this thing into a package or procedure. The join to USER_TABLES is there to avoid view constraints.
It's unlikely that you really want to disable all constraints (including NOT NULL, primary keys, etc). You should think about putting constraint_type in the WHERE clause.
BEGIN
...
How do I use vim registers?
...
How to enable if one has -xterm_clipboard on vim --version. Any simple package to install? (debian/apt-get). Thanks.
– DrBeco
Aug 24 '14 at 22:30
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JavaScript/jQuery to download file via POST with JSON data
...her things. Create an element and use appendChild instead.
$.post('/create_binary_file.php', postData, function(retData) {
var iframe = document.createElement("iframe");
iframe.setAttribute("src", retData.url);
iframe.setAttribute("style", "display: none");
document.body.appendChild(iframe)...