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How to import load a .sql or .csv file into SQLite?
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You saved my weeks. I finished my work in 3 second. I converted 120MB CSV file to .db in mere 5 seconds.
– zackygaurav
Feb 18 '16 at 20:49
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In Python, using argparse, allow only positive integers
...method that decides this for you:
def check_positive(value):
ivalue = int(value)
if ivalue <= 0:
raise argparse.ArgumentTypeError("%s is an invalid positive int value" % value)
return ivalue
parser = argparse.ArgumentParser(...)
parser.add_argument('foo', type=check_positive...
How to get a reference to current module's attributes in Python
...ed in the module. The way I typically see this done is like this:
import sys
dir(sys.modules[__name__])
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How do I specify “close existing connections” in sql script
... the database with existing connections may look like this:
DECLARE @dbId int
DECLARE @isStatAsyncOn bit
DECLARE @jobId int
DECLARE @sqlString nvarchar(500)
SELECT @dbId = database_id,
@isStatAsyncOn = is_auto_update_stats_async_on
FROM sys.databases
WHERE name = 'db_name'
IF @isStatAsyncO...
Core dumped, but core file is not in the current directory?
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Read /usr/src/linux/Documentation/sysctl/kernel.txt.
[/proc/sys/kernel/]core_pattern is used to specify a core dumpfile pattern name.
If the first character of the pattern is a '|', the kernel will treat
the rest of the pattern as a command to run. The cor...
How to convert An NSInteger to an int?
...UInteger row = 100;
i > row // true, since the signed int is implicitly converted to an unsigned int
i > (int)row // false
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Lambda expression to convert array/List of String to array/List of Integers
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You could create helper methods that would convert a list (array) of type T to a list (array) of type U using the map operation on stream.
//for lists
public static <T, U> List<U> convertList(List<T> from, Function<T, U> func) {
return fro...
How to convert an int to string in C?
How do you convert an int (integer) to a string? I'm trying to make a function that converts the data of a struct into a string to save it in a file.
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Converting an int to a binary string representation in Java?
What would be the best way (ideally, simplest) to convert an int to a binary string representation in Java?
16 Answers
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驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网 - 专注IT技能提升
...的控制。
为什么是 OOM Killer？
主要发行版内核设置/proc/sys/vm/overcommit_memory的默认值 为零，这意味着进程可以请求比系统中当前可用的内存更多的内存。这是基于试探法完成的，即分配的内存不会立即使用，并且进程在其生命...