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What is the use of having destructor as private?
...you don't want to delete main class through the pointer to class that adds extra functionality to the main.
In the example below I don't want GuiWindow to be deleted through a HandlerHolder pointer.
class Handler
{
public:
virtual void onClose() = 0;
protected:
virtual ~Handler();
};
clas...
What is context in _.each(list, iterator, [context])?
...pluck, 2);
Even from the limited examples, you can see how powerful an "extra argument" can be for creating re-usable code. Instead of making a different callback function for each situation, you can usually adapt a low-level helper. The goal is to have your custom logic bundling a verb and two n...
Does free(ptr) where ptr is NULL corrupt memory?
...L Perq running PNX, which was based on Version 7 Unix with some System III extras). But I've not code that way for a long time.
– Jonathan Leffler
Mar 11 '10 at 14:06
...
Deleting Row in SQLite in Android
...like this:
//---deletes a particular title---
public boolean deleteTitle(String name)
{
return db.delete(DATABASE_TABLE, KEY_NAME + "=" + name, null) > 0;
}
or
public boolean deleteTitle(String name)
{
return db.delete(DATABASE_TABLE, KEY_NAME + "=?", new String[]{name}) > 0;
}
...
How do you save/store objects in SharedPreferences on Android?
...Object', etc.
Editor prefsEditor = mPrefs.edit();
Gson gson = new Gson();
String json = gson.toJson(myObject);
prefsEditor.putString("MyObject", json);
prefsEditor.commit();
To retrieve:
Gson gson = new Gson();
String json = mPrefs.getString("MyObject", "");
MyObject obj = gson.fromJson(json, My...
How to change a field name in JSON using Jackson
...ed using @JsonProperty?
@Entity
public class City {
@id
Long id;
String name;
@JsonProperty("label")
public String getName() { return name; }
public void setName(String name){ this.name = name; }
@JsonProperty("value")
public Long getId() { return id; }
public void se...
New line in text area
...
I've found String.fromCharCode(13, 10) helpful when using view engines.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode
This creates a string with the actual newline characters in i...
How to pass parameters to the DbContext.Database.ExecuteSqlCommand method?
... no more prone to attacks than this answer. Maybe you thought it was using string.Format - it's not.
– Simon MᶜKenzie
Nov 25 '14 at 4:35
...
Use Font Awesome Icons in CSS
...text character where you want it, without having to add all kinds of messy extra mark-up.
Be sure to set position:relative on your actual text wrapper for the positioning to work.
.mytextwithicon {
position:relative;
}
.mytextwithicon:before {
content: "\25AE"; /* this is your text. Y...
Git mergetool generates unwanted .orig files
...ution a *.orig file is created. Is there a way for it to not create that extra file?
10 Answers
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