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Why does the order in which libraries are linked sometimes cause errors in GCC?
...before one another: -la -lb -la.
Linking to dynamic libraries
$ export LD_LIBRARY_PATH=. # not needed if libs go to /usr/lib etc
$ g++ -fpic -shared d.cpp -o libd.so
$ g++ -fpic -shared b.cpp -L. -ld -o libb.so # specifies its dependency!
$ g++ -L. -lb a.cpp # wrong order (works on some distribut...
Does anyone have benchmarks (code & results) comparing performance of Android apps written in Xamari
...d ACW here: https://developer.xamarin.com/guides/cross-platform/application_fundamentals/building_cross_platform_applications/part_1_-_understanding_the_xamarin_mobile_platform/
Bindings are in terms of performance very very costly. Invoking a C++ method from Java adds a huge overhead in calling t...
What is an idiomatic way of representing enums in Go?
... bit1, mask1 // bit1 == 2, mask1 == 1
_, _ // skips iota == 2
bit3, mask3 // bit3 == 8, mask3 == 7
)
This last example exploits the implicit repetition of the last non-empty expression list.
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Get list of databases from SQL Server
...uery:
SELECT name FROM master.dbo.sysdatabases
or if you prefer
EXEC sp_databases
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printf with std::string?
... for some reason, you need to extract the C-style string, you can use the c_str() method of std::string to get a const char * that is null-terminated. Using your example:
#include <iostream>
#include <string>
#include <stdio.h>
int main()
{
using namespace std;
string my...
Traversing text in Insert mode
... edited May 29 '19 at 11:42
I_Don't_Code
7788 bronze badges
answered Nov 15 '09 at 11:13
P ShvedP Shved
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Expanding a parent to the height of its children
...
such an awesome css value! unsupported in Edge ¯_(ツ)_/¯
– Samer Murad
Jun 3 '19 at 11:49
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MySQL Orderby a number, Nulls last
...ASC.
A good reference is here http://troels.arvin.dk/db/rdbms#select-order_by
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How to make an app's background image repeat
...a hack to prevent ListViews from going black while scrolling.
drawable/app_background.xml:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:src="@drawable/actual_pattern_image"
android:tileMode="repeat" /...
Automatically capture output of last command into a variable using Bash?
...y getting at results.
That being said, here is the "solution":
PROMPT_COMMAND='LAST="`cat /tmp/x`"; exec >/dev/tty; exec > >(tee /tmp/x)'
Set this bash environmental variable and issues commands as desired. $LAST will usually have the output you are looking for:
startide seth> ...