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Using GCC to produce readable assembly?
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If you compile with debug symbols, you can use objdump to produce a more readable disassembly.
>objdump --help
[...]
-S, --source Intermix source code with disassembly
-l, --line-numbers Include line num...
Python non-greedy regexes
...owerful *?
From the docs, Greedy versus Non-Greedy
the non-greedy qualifiers *?, +?, ??, or {m,n}? [...] match as little
text as possible.
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Rails migrations: self.up and self.down versus change
...me kind of operation you still need to define the down method, for example if you change the precision of a decimal column how to guess the original precision on rollback? It's not possible, so you need to define the down method.
As said, I suggest you to read the Rails Migrations Guide.
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AngularJS Directive Restrict A vs E
...template. The
common case for this is when you are creating a Domain-Specific
Language for parts of your template. Use an attribute when you are
decorating an existing element with new functionality.
Edit following comment on pitfalls for a complete answer:
Assuming you're building an app t...
数据结构与本地数据库 05：搜索、倒序与重复导入 · App Inventor 2 中文网
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procedure 刷新() {
显示 = []
var 标题 = []
foreach 项 in 卡片 {
if 关键词 = "" or textContains(lower(join(dictget(项,"question",""), " ", dictget(项,"category",""))), lower(关键词)) {
listadd(显示, 项)
listadd(标题, join("#", dictget(项,"id",0), " · ", dictget(项,"category...
When annotating a class with @Component, does this mean it is a Spring Bean and Singleton?
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Yes, that is correct, @Component is a Spring bean and a Singleton.
If the class belongs to the service layer you may want to annotate it with @Service instead
But have in mind that in order for these annotations to be detected, you need to place this line in applicationContext.xml:
<con...
SQL-Server: The backup set holds a backup of a database other than the existing
...ile
providing the source to restore.
Also change the file names at "Files" if the other database still exists. Otherwise you get "The file '...' cannot be overwritten. It is being used by database 'yourFirstDb'".
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How can I get a favicon to show up in my django app?
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If you have a base or header template that's included everywhere why not include the favicon there with basic HTML?
<link rel="shortcut icon" type="image/png" href="{% static 'favicon.ico' %}"/>
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Git Tag list, display commit sha1 hashes
... SHA1 hash of the tag, followed by the tag name prefixed with refs/tags/.
If you want the SHA1 hash of the commit, instead of the tag object, you can run:
git show-ref --tags -d
This will produce output like:
0e76920bea4381cfc676825f3143fdd5fcf8c21f refs/tags/1.0.0
3e233dd8080617685992dc6346f73...
Trusting all certificates with okHttp
...lient() {
try {
// Create a trust manager that does not validate certificate chains
final TrustManager[] trustAllCerts = new TrustManager[] {
new X509TrustManager() {
@Override
public void checkClientTrusted(java.security.cert.X509Certificate[] chain, String aut...