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How to log PostgreSQL queries?
...data/postgresql.conf file, change the log_statement setting to 'all'.
Edit
Looking at your new information, I'd say there may be a few other settings to verify:
make sure you have turned on the log_destination variable
make sure you turn on the logging_collector
also make sure that the log_dir...
深入理解 x86/x64 的中断体系 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...nterrupt handler 入口
IDT 表中 descriptor 类型的检查
使用 16-bit gate descriptor
IDT 表的 limit 检查
请求访问 interrupt handler 时的权限检查
gate 的权限设置
interrupt handler 的 code segment 权限设置
使用 interrupt gate
使用 trap gate
使用 task...
Serializing PHP object to JSON
...ects to JSON, when I stumbled across the new JsonSerializable Interface . It's only PHP >= 5.4 though, and I'm running in a 5.3.x environment.
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Invalid argument supplied for foreach()
It often happens to me to handle data that can be either an array or a null variable and to feed some foreach with these data.
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How do I insert NULL values using PDO?
...a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody (thank you Will Shaver for reporting.)
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How to paste text to end of every line? Sublime 2
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You can use the Search & Replace feature with this regex ^([\w\d\_\.\s\-]*)$ to find text and the replaced text is "$1".
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Find objects between two dates MongoDB
...d explanation on the matter, but below is something I tried out myself and it seems to work.
items.save({
name: "example",
created_at: ISODate("2010-04-30T00:00:00.000Z")
})
items.find({
created_at: {
$gte: ISODate("2010-04-29T00:00:00.000Z"),
$lt: ISODate("2010-05-01T00...
PHP array delete by value (not key)
... unset($messages[$key]);
}
array_search() returns the key of the element it finds, which can be used to remove that element from the original array using unset(). It will return FALSE on failure, however it can return a false-y value on success (your key may be 0 for example), which is why the str...
Using R to download zipped data file, extract, and import data
@EZGraphs on Twitter writes:
"Lots of online csvs are zipped. Is there a way to download, unzip the archive, and load the data to a data.frame using R? #Rstats"
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String comparison using '==' vs. 'strcmp()'
It seems that PHP's === operator is case sensitive. So is there a reason to use strcmp() ?
13 Answers
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