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How to debug Lock wait timeout exceeded on MySQL?
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What gives this away is the word transaction. It is evident by the statement that the query was attempting to change at least one row in one or more InnoDB tables.
Since you know the query, all the tables being accessed are candidates for being the culprit.
From there, you shou...
数据结构与本地数据库 03：增删改与 TinyDB 恢复 · App Inventor 2 中文网
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新增用独立的下一编号，修改和删除用选中 ID。删除对话框打开时固定目标 ID，确认后再处理；取消不能先修改列表。
先预测，再运行
打开删除确认框后又换了选中项，应该删哪条？
先记下自己...
How can I find my Apple Developer Team id and Team Agent Apple ID?
...ying to transfer an app. I am having troubles finding my team agent apple id and my team id. I have found it before and I have searched for 30 min without any luck now that i need it.
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How to make a countdown timer in Android?
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new CountDownTimer(30000, 1000) {
public void onTick(long millisUntilFinished) {
mTextField.setText("seconds remaining: " + millisUntilFinished / 1000);
//here you can have your logic to set text to edittext
}
public void onFinish() {
m...
What is the standard naming convention for html/css ids and classes?
...sing it a lot. For example, if you've got your underscore key on the underside of the keyboard (unlikely, but entirely possible), then stick to hyphens. Just go with what is best for yourself. Additionally, all 3 of these conventions are easily readable. If you're working in a team, remember to keep...
How to use JavaScript variables in jQuery selectors?
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var name = this.name;
$("input[name=" + name + "]").hide();
OR you can do something like this.
var id = this.id;
$('#' + id).hide();
OR you can give some effect also.
$("#" + this.id).slideUp();
If you want to remove the entire element permanently form the page.
$("#" ...
Can I specify multiple users for myself in .gitconfig?
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You can configure an individual repo to use a specific user / email address which overrides the global configuration. From the root of the repo, run
git config user.name "Your Name Here"
git config user.email your@email.com
whereas the default use...
How to get Resource Name from Resource id
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to get string like radio1:
getResources().getResourceEntryName(int resid);
to get string like com.sample.app:id/radio1:
getResources().getResourceName(int resid);
In Kotlin Now :
val name = v.context.resources.getResourceEntryName(v.id)
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How to map a composite key with JPA and Hibernate?
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To map a composite key, you can use the EmbeddedId or the IdClass annotations. I know this question is not strictly about JPA but the rules defined by the specification also applies. So here they are:
2.1.4 Primary Keys and Entity Identity
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A composite pri...
Check if a dialog is displayed with Espresso
I'm trying to write some tests with the new android-test-kit (Espresso) . But I can't find any information on how to check if a dialog is displayed and perform some actions on it (like clicking the positive and negative buttons, e.t.c.). Note that a dialog may be also displayed by a WebView , no...