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How do I print the full value of a long string in gdb?
...er it has printed the number of elements set by the set print elements command. This limit also applies to the display of strings. When GDB starts, this limit is set to 200. Setting number-of-elements to zero means that the printing is unlimited.
...
vector::at vs. vector::operator[]
...t; surprising results!! 5 to 10 times slower/faster! . I just don't understand what the at() method is good for.
8 Answer...
Creating temporary files in bash
...many shell scripts take the name of the program with
the pid as a suffix and use that as a temporary file name. This kind
of naming scheme is predictable and the race condition it creates is
easy for an attacker to win. A safer, though still inferior, approach
is to make a temporary directo...
What exactly is Spring Framework for? [closed]
...The problem
For example, suppose you need to list the users of the system and thus declare an interface called UserLister:
public interface UserLister {
List<User> getUsers();
}
And maybe an implementation accessing a database to get all the users:
public class UserListerDB implements...
How to list files in a directory in a C program?
... on terminal by a C program? Maybe I can use exec function to run find command but I want file name as a string to send client program. How can I do this?
...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...专栏
QEMU http://www.reactos.org/wiki/QEMU#Grabbi ... g_messages
VirtualBox http://www.reactos.org/wiki/VirtualBox# ... bug_output
VMware http://www.reactos.org/wiki/VMware#Getting_debug_output
真实电脑——物理串口线
如果想通过串口从真实电脑接受调试信息，你需...
Fastest way to remove first char in a String
...foo" instead of "//foo".
The first option needs a bit more work to understand than the third - I would view the Substring option as the most common and readable.
(Obviously each of them as an individual statement won't do anything useful - you'll need to assign the result to a variable, possibly d...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
...he profile.
The rules as to when bash runs certain files are complicated, and depend on the type of shell being started (login/non-login, interactive or not, and so forth), along with command line arguments and environment variables.
You can see them in the man bash output, just look for INVOCATIO...
How do you find the row count for all your tables in Postgres
...g number to monitor.
The third way is to note that the system ANALYZE command, which is executed by the autovacuum process regularly as of PostgreSQL 8.3 to update table statistics, also computes a row estimate. You can grab that one like this:
SELECT
nspname AS schemaname,relname,reltuples
FR...
Split comma-separated strings in a column into separate rows
...odified according to Rich Scriven's comment,
Jaap's two data.table methods and two dplyr / tidyr approaches,
Ananda's splitstackshapesolution,
and two additional variants of Jaap's data.table methods.
Overall 8 different methods were benchmarked on 6 different sizes of data frames using the micro...