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I have a couple of variables and I want to check the following condition (written out in words, then my failed attempt at ... = "t2")) ); then scale=0.05 fi Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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version control - How do you get git to always pull from a specific branch?

I'm not a git master, but I have been working with it for some time now, with several different projects. ... work as it did originally before my git checkout. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What do the makefile symbols $@ and $< mean?

CC=g++ CFLAGS=-c -Wall LDFLAGS= SOURCES=main.cpp hello.cpp factorial.cpp OBJECTS=$(SOURCES:.cpp=.o) EXECUTABLE=hello ... $@ What do the $@ and $< do exactly? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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visual studio code - How can I customize the tab-to-space conversion factor?

How do I customize the tab-to-space conversion factor when using Visual Studio Code? For instance, right now in ... of TAB, but in TypeScript it produces 4. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Quickly create a large file on a Linux system

How can I quickly create a large file on a Linux (Red Hat Linux) system? dd will do the job, but reading from ... . I need the file to be allocated disk space. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - What are the actual uses of ES6 WeakMap?

What are the actual uses of the WeakMap data structure introduced in ECMAScript 6? Since a key of a weak map ... value; What concrete use cases am I missing? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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MISCONF Redis is configured to save RDB snapshots

During writes to Redis ( SET foo bar ) I am getting the following error: MISCONF Redis is configured to ... most probably no attempts to solve the problem. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Why doesn't C++ have a garbage collector?

I'm not asking this question because of the merits of garbage collection first of all. My main reason for asking ... why the collector can't be added in. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to run Visual Studio post-build events for debug build only

How can I limit my post-build events to running only for one type of build? I'm using the events to ... this happening on the build server in release mode. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - How to use ADB Shell when Multiple Devices are connected? Fails with "error: more than one device and emulator"

$ adb --help -s SERIAL use device with given serial (overrides $ANDROID_SERIAL) $ adb devices List of ... 7f1c864e error: more than one device and emulator Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Setup a Git server with msysgit on Windows

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Extract subset of key-value pairs from dictionary?

I have a big dictionary object that has several key value pairs (about 16), but I am only interested in 3 of ... am sure there is a more elegant way than this. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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security - JWT refresh token flow

I'm building a mobile app and am using JWT for authentication. It seems like the best way to do this is ... access a separate route to retrieve an access-token? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Exact time measurement for performance testing

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asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - JS function named `animate` doesn't work in Chrome, but works in IE

This won't work, nothing happens. How do I make it work, what am I doing wrong? function animate() { var div = ... <p id='demo' onclick="animate()">lolol</p> Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to set Icon to a JLabel from an image from a folder?

I am trying to set an icon to a JLabel from a folder of images whenever an item is selected from a JComboBox. ... only shows "Image not found" on the JLabel. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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parallel processing - OpenMP program is slower than sequential one

When I try the following code double start = omp_get_wtime(); long i; #pragma omp parallel for for (i = ... version that's faster that the sequential one? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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vb.net - draw outline for some connected lines

I have some lines that are connected at various points. I want to draw the outline of these lines and I also want ... but any advice will be very useful to me. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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What is an undefined reference/unresolved external symbol error and how do I fix it in Fortran?

I am trying to build a Fortran program, but I get errors about an undefined reference or an unresolved external ... Fortran, and how do I fix/prevent them? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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wix - How to execute conditional custom action on install and modify only?

I have a installer which is working fine. I want to run custom action only in install and modify only. Here is ... only in install mode. What i am doing wrong? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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260 views

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c++ - Modifying a const through a non-const pointer

I'm a bit confused what happened in the following code: const int e = 2; int* w = ( int* ) &e; // (1) ... come the value pointed by w is still the address of e? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Displaying Time in Assembly

Hello im trying to display the actual time hours/minutes/seconds this is my code sample: MOV AH, 2Ch INT 21h ... Here you can se what the console is displaying Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - Why does call-by-value example not modify input parameter?

In the following call-by-value example, I cannot understand why this code is not changing the value of the 5 to a 6. ... the value from 5 to 6. 5 is output? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do you pass a string from one activity to another?

This question already has answers here: Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mysql fulltext search failure

This is what I tested. mysql> select * from product; +------------+---------+---------------+ | ... ) ) ENGINE=MyISAM; Equal sign and 'LIKE' work fine. So Why? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ms access - Syntax error in insert into statement - what's the error?

this is the full code here for a button to add data to 2 different tables the weird thing is that i ... & "')" clientssubform.Form.Requery End Sub Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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109 views

1 answer

What is the difference between a Docker image and a container?

When using Docker, we start with a base image. We boot it up, create changes and those changes are saved in ... keep on being persisted. What is a container? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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253 views

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git history graph - How can I view an old version of a file with Git?

Is there a command in Git to see (either dumped to stdout, or in $PAGER or $EDITOR) a particular version of a particular file? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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