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Node.js: what is ENOSPC error and how to solve?
... It's not a random number. Each used inotify watch takes up 540 bytes (32-bit system), or 1 kB (double - on 64-bit). This comes out of kernel memory, which is unswappable. So, assuming you set the max at 524288, and all were used (improbable), you'd be using approx. 256MB/512MB of 32-bit/64-bit ker...
What is the difference between varchar and varchar2 in Oracle?
...re rownum=1;
Oracle Database 12c Enterprise Edition Release 12.2.0.1.0 - 64bit Production
SQL> create table test (my_char varchar(20));
Table created.
SQL> desc test
Name Null? Type
MY_CHAR VARCHAR2(20)
There are also some implications of VARCHA...
How exactly does CMake work?
...lation/platform.
For instance you may to try to compile your software on Windows with Visual Studio then with proper syntax in your CMakeLists.txt file you can launch
cmake .
inside your project's directory on Windows platform,Cmake will generate all the necessary project/solution files (.sln ...
AES vs Blowfish for file encryption
...nd most other block ciphers of the same era, like 3DES and IDEA) have a 64 bit block size, which is considered insufficient for the large file sizes which are common these days (the larger the file, and the smaller the block size, the higher the probability of a repeated block in the ciphertext - an...
Memory address of variables in Java
...at identity hash codes are not guaranteed to be unique. For instance on 64-bit JVM there are 2^32 identity hash codes but 2^64 memory addresses.
– Alex Jasmin
Dec 25 '09 at 14:42
1...
6个变态的C语言Hello World程序 - 创意 - 清泛网 - 专注C/C++及内核技术
...ne ___ _(0x6F)_(0x2C)_(0x20)_(0x77)_(0x6F)
#define ____ _(0x72)_(0x6C)_(0x64)_(0x21)
#define _____ __ ___ ____ _________
#include<stdio.h>
_____
hello2.c
#include<stdio.h>
main(){
int x=0,y[14],*z=&y;*(z++)=0x48;*(z++)=y[x++]+0x1D;
*(z++)=y[x++]+0x07;*(z++)=y[x++]+0x00;*(...
Is there a way to include commas in CSV columns without breaking the formatting?
...ncoded as "", and the whole field will become """". So if you see the following in e.g. Excel:
---------------------------------------
| regular_value |,,,"| ,"", |""" |"|
---------------------------------------
the CSV file will contain:
regular_value,",,,""",","""",","""""""",""""
A comma...
Case conventions on element names?
...
There is no formal recommendation.
Since XML was designed with the twin purposes of holding documents and exchanging information between disparate systems, it was designed so as to be able to match the applications using it.
So .Net XML tends to use ProperCasing (witness XAML), while other X...
dd: How to calculate optimal blocksize? [closed]
... calculate the optimal blocksize when running a dd ? I've researched it a bit and I've not found anything suggesting how this would be accomplished.
...
How to check if a file is a valid image file?
... edited Aug 8 '14 at 18:32
Two-Bit Alchemist
14.4k44 gold badges3535 silver badges7474 bronze badges
answered May 20 '09 at 19:02
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