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What is the correct way of using C++11's range-based for?
...f using for (const auto& x : v) just fails to compile.
g++ outputs an error message something like this:
TestRangeFor.cpp:138:11: error: assignment of read-only reference 'x'
x *= 10;
^
The correct approach in this case is capturing by non-const reference:
vector<...
How do I see the last 10 commits in reverse-chronological order with SVN?
...eturns only till r900. Just wanted to check if this was the standard or an error. Also svn log -l10 <URL of your repository> would return the latest(r901) also.
– Shyam K
Dec 5 '12 at 4:38
...
Linux Shell中 if else及大于、小于、等于逻辑表达式写法 - C/C++ - 清泛网...
....tgz"
cd /data/nginx/logs
if [ -f "$FILE" ];then
echo "OK"
else
echo "error $FILE" > error.log
mail -s "$FILE backup fail" test@tsingfun.com <error.log
fi
2、清除相关文件，并按时间段记录日志
#!/bin/sh
# 清除相关文件，并按时间段记录日志
#
DIR=/data/img_c...
How to initialize log4j properly?
...nfigurator.configure();
will setup basic logging to the console, and the error messages will be gone.
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C++11 rvalues and move semantics confusion (return statement)
..._ref = return_vector();
In the second example you have created a run time error. rval_ref now holds a reference to the destructed tmp inside the function. With any luck, this code would immediately crash.
Third example
std::vector<int> return_vector(void)
{
std::vector<int> tmp {1...
How can I select every other line with multiple cursors in Sublime Text?
...t already enabled, enable them: Alt+R
Type in the expression .*\n.*\n
Find all: Alt+Enter
Press left arrow to get rid of the selections, leaving just the cursors: ←
You now have a cursor at the start of every odd-numbered line. If you wanted even-numbered lines, press down: ↓
Depending on the fi...
What is the preferred syntax for defining enums in JavaScript?
...ms:
let day = DaysEnum.tuesday
day = 298832342 // goes through without any errors
One way to ensure a stronger degree of type safety (with enums or otherwise) is to use a tool like TypeScript or Flow.
Quotes aren't needed but I kept them for consistency.
...
INSERT INTO…SELECT for all MySQL columns
...ble
WHERE entry_date < '2011-01-01 00:00:00'
For avoiding primary key errors if you already have data in the archive table
INSERT INTO this_table_archive
SELECT t.*
FROM this_table t
LEFT JOIN this_table_archive a on a.id=t.id
WHERE t.entry_date < '2011-01-01 00:00:00'
AND a.id is null #...
How do I find where JDK is installed on my windows machine?
...
Actually, the form %VAR_NAME% is Windows
– sblundy
Jan 13 '11 at 14:29
2
...
Why does running the Flask dev server run itself twice?
...g is the library that supplies Flask with the development server when you call app.run().
See the restart_with_reloader() function code; your script is run again with subprocess.call().
If you set use_reloader to False you'll see the behaviour go away, but then you also lose the reloading function...